SENIOR REGISTRATION RIGHTS AGREEMENT

Exhibit 4.11

SENIOR REGISTRATION RIGHTS AGREEMENT

This SENIOR REGISTRATION RIGHTS AGREEMENT dated October 10, 2008 (this “Agreement”) is entered into by and among CDW Corporation, an Illinois corporation (the “Issuer”), the Guarantors party hereto (collectively, the “Guarantors” and, individually, a “Guarantor”) and the holders of loans made to the Issuer as borrower under the Bridge Loan Agreement (as defined below) who, from time to time in connection with the delivery of an Exchange Request, execute and deliver a joinder to this Agreement in the form of Annex A attached hereto and thereby become a party hereto (collectively, the “Holders” and, individually, a “Holder”).

This Agreement is entered into pursuant to the terms of the Senior Bridge Loan Credit Agreement among VH MergerSub, Inc., the Issuer, the guarantors named therein, JPMorgan Chase Bank, N.A., as Administrative Agent, and the other agents and lenders from time to time party thereto (the “Lenders”), dated as of October 12, 2007 and amended and restated on March 12, 2008 and further amended on April 2, 2008 (the “Bridge Loan Agreement”), which provides for, among other things, the issuance by the Issuer of its Senior Exchange Notes due 2015 (the “Senior Notes”) and its Senior PIK Election Exchange Notes due 2015 (the “Senior PIK Election Notes”, and together with the Senior Notes, the “Securities”). In order to induce the Lenders to enter into the Bridge Loan Agreement, the Issuer and the Guarantors agreed to provide the registration rights set forth in this Agreement for the benefit of the Lenders and any subsequent holder or holders of any Securities.

In consideration of the foregoing, the parties hereto agree as follows:

1.     Definitions. As used in this Agreement, the following terms shall have the following meanings:

“Additional Guarantor” shall mean any subsidiary of the Issuer that executes a Guarantee under the Indenture after the date of this Agreement.

“Agreement” shall have the meaning set forth in the first paragraph of the preamble.

“Business Day” shall mean any day that is not a Saturday, Sunday or other day on which commercial banks in New York City are authorized or required by law to remain closed.

“Bridge Loan Agreement” shall have the meaning set forth in the second paragraph of the preamble.

“Exchange” means the receipt by a lender under the Bridge Loan Agreement of Initial Notes in exchange for the Loans (or a portion thereof) of such lender then outstanding.

“Exchange Act” shall mean the Securities Exchange Act of 1934, as amended from time to time.

“Exchange Dates” shall have the meaning set forth in Section 2(a)(ii) hereof.

“Exchange Offer” shall mean the exchange offer by the Issuer and the Guarantors of Exchange Securities for Registrable Securities pursuant to Section 2(a) hereof.

“Exchange Offer Consummation Deadline” shall have the meaning set forth in Section 2(a) hereof.

“Exchange Offer Effectiveness Deadline” shall have the meaning set forth in Section 2(a) hereof.

“Exchange Offer Filing Deadline” shall have the meaning set forth in Section 2(a) hereof.

“Exchange Offer Registration” shall mean a registration under the Securities Act effected pursuant to Section 2(a) hereof.

“Exchange Offer Registration Statement” shall mean an exchange offer registration statement on Form S-4 (or, if applicable, on another appropriate form) and all amendments and supplements thereto, in each case including the Prospectus contained therein or deemed a part thereof, all exhibits thereto and any document incorporated by reference therein.

“Exchange Request” means a written notice sent by a lender to the Administrative Agent and the Issuer at least ten Business Days prior to an Exchange Date selected by such lender for an Exchange, specifying (i) the lender’s legal name; (ii) the Exchange Date selected by such lender; (iii) the principal amount of the Loans to be exchanged for Initial Notes pursuant to the applicable notice; and (iv) if the lender is electing to have the interest rate fixed pursuant to terms of the Bridge Loan Agreement with respect to all or any portion of the Initial Notes, the principal amount of the Initial Notes to be represented by a Fixed Rate Note.

“Exchange Securities” shall mean the Senior Exchange Notes and the Senior PIK Election Exchange Notes.

“Fixed Rate Note” means a Note bearing a fixed rate of interest pursuant to the terms of the Indenture hereof and subject to call protection as provided in the Indenture.

“Free Writing Prospectus” means each free writing prospectus (as defined in Rule 405 under the Securities Act) prepared by or on behalf of the Issuer or used or referred to by the Issuer in connection with the sale of the Securities or the Exchange Securities.

“Guarantors” shall have the meaning set forth in the first paragraph of the preamble and shall also include any Guarantor’s successors and any Additional Guarantors that become party to this Agreement.

“Holders” shall mean the holders of Registrable Securities, for so long as they own any Registrable Securities, and each of their successors, assigns and direct and indirect transferees who become owners of Registrable Securities; provided that for purposes of Sections 4 and 5 of this Agreement, the term “Holders” shall include Participating Broker-Dealers.

“Increasing Rate Note” means any Note other than a Fixed Rate Note.

“Indemnified Person” shall have the meaning set forth in Section 5(c) hereof.

“Indemnifying Person” shall have the meaning set forth in Section 5(c) hereof.

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“Indenture” shall mean the Senior Exchange Notes Indenture relating to the Securities dated as of October 10, 2008 among CDW, the Guarantors and U.S. Bank National Association, as trustee, and as the same may be amended from time to time in accordance with the terms thereof.

“Initial Notes” means (i) the Senior Exchange Notes and (ii) the Senior PIK Election Exchange Notes, in each case issued in exchange for the Loans in accordance with the terms of the Indenture, which may take the form of Fixed Rate Notes or Increasing Rate Notes pursuant to the terms of the Indenture. Fixed Rate Notes with different interest rates will be issued as separate series under the Indenture; provided, however, that Fixed Rate Notes that accrue interest at the same rate due on the same payment date will be issued as a single series. “Initial Notes” shall include any Fixed Rate Notes issued in exchange for Increasing Rate Notes.

“Inspector” shall have the meaning set forth in Section 3(a)(xiii) hereof.

“Issue Date” the date of original issuance of the Securities.

“Issuer” shall have the meaning set forth in the first paragraph of the preamble and shall also include the Issuer’s successors.

“Issuer Information” shall have the meaning set forth in Section 5(a) hereof.

“Loan” shall mean any loan made under the Bridge Loan Agreement.

“Majority Holders” shall mean the Holders of a majority of the aggregate principal amount of the outstanding Registrable Securities; provided that whenever the consent or approval of Holders of a specified percentage of Registrable Securities is required hereunder, any Registrable Securities owned directly or indirectly by the Issuer or any of its affiliates shall not be counted in determining whether such consent or approval was given by the Holders of such required percentage or amount; and provided, further, that if the Issuer shall issue any additional Securities under the Indenture prior to consummation of the Exchange Offer or, if applicable, the effectiveness of any Shelf Registration Statement, such additional Securities and the Registrable Securities to which this Agreement relates shall be treated together as one class for purposes of determining whether the consent or approval of Holders of a specified percentage of Registrable Securities has been obtained.

“Participating Broker-Dealers” shall have the meaning set forth in Section 4(a) hereof.

“Person” shall mean an individual, partnership, limited liability company, corporation, trust or unincorporated organization, or a government or agency or political subdivision thereof.

“Piggy Back Registration” shall have the meaning set forth in Section 2(c) hereof.

“Prospectus” shall mean the prospectus included in, or, pursuant to the rules and regulations of the Securities Act, deemed a part of, a Registration Statement, including any preliminary prospectus, and any such prospectus as amended or supplemented by any prospectus supplement, including a prospectus supplement with respect to the terms of the offering of any portion of the Registrable Securities covered by a Shelf Registration Statement, and by all other amendments and supplements to such prospectus, and in each case including any document incorporated by reference therein.

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“Registrable Securities” shall mean the Securities and the Exchange Securities as to which Section 2(b)(iii) hereof is applicable; provided that such Securities or Exchange Securities, as the case may be, shall cease to be Registrable Securities (i) when a Registration Statement (other than, with respect to any Exchange Security as to which Section 2(b)(iii) hereof is applicable, the Exchange Offer Registration Statement) with respect to such Securities or Exchange Securities, as the case may be, has become effective under the Securities Act and such Securities or Exchange Securities, as the case may be, have been exchanged or disposed of pursuant to such Registration Statement, (ii) when such Securities have been exchanged pursuant to the Exchange Offer for Exchange Securities that may be resold without restriction under U.S. state and federal securities laws, (iii) when such Securities or Exchange Securities, as the case may be, are eligible to be sold pursuant to Rule 144(d)(1)(ii) under the Securities Act (or, in the event the Issuer is, and has been for a period of at least 90 days immediately before the sale, subject to the reporting requirements of section 13 or 15(d) of the Exchange Act, Rule 144(d)(1)(i) under the Securities Act) (or any similar provision then in force, but not Rule 144A), (iv) when such Securities or Exchange Securities, as the case may be, cease to be outstanding for purposes of the Indenture or (v) when such Securities or Exchange Securities, as the case may be, are sold pursuant to Rule 144 under circumstances in which any legend borne by such Securities relating to restrictions on transferability thereof, under the Securities Act or otherwise, is removed by the Issuer.

“Registration Expenses” shall mean any and all expenses incident to the performance of or compliance by the Issuer and the Guarantors with this Agreement, including without limitation: (i) all SEC, stock exchange or Financial Industry Regulatory Authority registration and filing fees, as applicable, (ii) all fees and expenses incurred in connection with compliance with state securities or blue sky laws (including reasonable fees and disbursements of one counsel for any Underwriters or Holders (whose counsel shall be selected by the Holders of a majority in aggregate principal amount of Registrable Securities to be registered in the applicable Registration Statement) in connection with blue sky qualification of any Exchange Securities or Registrable Securities), (iii) all expenses of any Persons in preparing or assisting in preparing, word processing, printing and distributing any Registration Statement, any Prospectus and any amendments or supplements thereto, any underwriting agreements, securities sales agreements or other similar agreements and any other documents relating to the performance of and compliance with this Agreement, (iv) all fees and disbursements relating to the qualification of the Indenture under applicable securities laws, (v) the fees and disbursements of the Trustee and its counsel, (vi) the fees and disbursements of counsel for the Issuer and the Guarantors and, in the case of a Shelf Registration Statement, the reasonable fees and disbursements of one counsel for the Holders (which counsel shall be selected by the Majority Holders), (vii) the fees and disbursements of the independent public accountants of the Issuer and the Guarantors, including the expenses of any special audits or “comfort” letters required by or incident to the performance of and compliance with this Agreement, but excluding fees and expenses of counsel to the Underwriters (other than fees and expenses set forth in clause (ii) above) or the Holders and underwriting discounts and commissions, brokerage commissions and transfer taxes, if any, relating to the sale or disposition of Registrable Securities by a Holder, (viii) Securities Act liability insurance, if the Issuer or any Guarantor desires such insurance, (ix) fees and expenses of all other Persons retained by the Issuer and the Guarantors and (x) internal expenses of the Issuer and the Guarantors (including, without limitation, all salaries and expenses of officers and employees of the Issuer and the Guarantors performing legal or accounting duties).

“Registration Statement” shall mean any registration statement of the Issuer and the Guarantors that covers any of the Registrable Securities pursuant to the provisions of this

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Agreement and all amendments and supplements to any such registration statement, including post-effective amendments, in each case including the Prospectus contained therein or deemed a part thereof, all exhibits thereto and any document incorporated by reference therein.

“SEC” shall mean the United States Securities and Exchange Commission.

“Securities” shall have the meaning set forth in the second paragraph of the preamble.

“Securities Act” shall mean the Securities Act of 1933, as amended from time to time.

“Senior Exchange Notes” shall mean Senior Notes issued by the Issuer and guaranteed by the Guarantors under the Indenture containing terms identical to the Senior Notes (except that the Senior Exchange Notes will not be subject to restrictions on transfer or to any increase in annual interest rate for failure to comply with this Agreement) and to be offered to Holders of Senior Notes in exchange for Senior Notes (i) pursuant to the Exchange Offer or (ii) as contemplated by Section 2(b) hereof.

“Senior Notes” shall have the meaning set forth in the second paragraph of the preamble.

“Senior PIK Election Exchange Notes” shall mean Senior PIK Election Notes issued by the Issuer and guaranteed by the Guarantors under the Indenture containing terms identical to the Senior PIK Election Notes (except that the Senior PIK Election Exchange Notes will not be subject to restrictions on transfer or to any increase in annual interest rate for failure to comply with this Agreement) and to be offered to Holders of Senior Notes in exchange for Senior Notes (i) pursuant to the Exchange Offer or (ii) as contemplated by Section 2(b) hereof.

“Senior PIK Election Notes” shall have the meaning set forth in the second paragraph of the preamble.

“Shelf Additional Interest Date” shall have the meaning set forth in Section 2(e) hereof.

“Shelf Effectiveness Period” shall have the meaning set forth in Section 2(b) hereof.

“Shelf Registration” shall mean a registration effected pursuant to Section 2(b) hereof.

“Shelf Registration Statement” shall mean a “shelf” registration statement of the Issuer and the Guarantors that covers all or a portion of the Registrable Securities (but no other securities unless approved by a majority of the Holders whose Registrable Securities are to be covered by such Shelf Registration Statement) on an appropriate form under Rule 415 under the Securities Act, or any similar rule that may be adopted by the SEC, and all amendments and supplements to such registration statement, including post-effective amendments, in each case including the Prospectus contained therein or deemed a part thereof, all exhibits thereto and any document incorporated by reference therein.

“Shelf Request” shall have the meaning set forth in Section 2(b) hereof.

“Staff” shall mean the staff of the SEC.

“Target Registration Date” shall have the meaning set forth in Section 2(e) hereof.

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“Trust Indenture Act” shall mean the Trust Indenture Act of 1939, as amended from time to time and the rules and regulations of the Commission thereunder, in each case, as in effect on the date the Indenture is qualified under the Trust Indenture Act.

“Trustee” shall mean the trustee under the Indenture and the trustee (if any) under any indenture governing the Exchange Securities.

“Underwriter” shall have the meaning set forth in Section 3(e) hereof.

“Underwritten Offering” shall mean an offering in which Registrable Securities are sold to an Underwriter for reoffering to the public.

2.     Registration Under the Securities Act. (a) To the extent that at least $100,000,000 aggregate principal amount of Securities remain outstanding and to the extent not prohibited by any applicable law or applicable interpretations of the Staff, the Issuer and the Guarantors shall use their commercially reasonable efforts to (i) cause to be filed with the SEC, on or prior to the 180^th day following the Issue Date (the “Exchange Offer Filing Deadline”), an Exchange Offer Registration Statement covering an offer to the Holders to exchange all the Registrable Securities for Exchange Securities, (ii) cause such Exchange Offer Registration Statement to be declared effective under the Securities Act within 90 days (or 180 days if the Issuer receives written notice that the Exchange Offer Registration Statement is to be reviewed by the SEC) of such Exchange Offer Filing Deadline (“Exchange Offer Effectiveness Deadline”) and (iii) have such Registration Statement remain effective until 180 days after the last Exchange Date for use by one or more Participating Broker-Dealers, or such shorter period as will terminate when all the Registrable Securities covered by such Registration Statement have been sold pursuant thereto. The Issuer and the Guarantors shall commence the Exchange Offer promptly after the Exchange Offer Registration Statement is declared effective by the SEC and use their commercially reasonable efforts to complete the Exchange Offer not later than 30 Business Days after such effective date (the “Exchange Offer Consummation Deadline”).

The Issuer and the Guarantors shall commence the Exchange Offer by mailing the related Prospectus, appropriate letters of transmittal and other accompanying documents to each Holder stating, in addition to such other disclosures as are required by applicable law, substantially the following:

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As a condition to participating in the Exchange Offer, a Holder will be required to represent to the Issuer and the Guarantors that (i) any Exchange Securities to be received by it will be acquired in the ordinary course of its business, (ii) at the time of the commencement of the Exchange Offer it has no arrangement or understanding with any Person to participate in the distribution (within the meaning of the Securities Act) of the Exchange Securities in violation of the provisions of the Securities Act, (iii) it is not an “affiliate” (within the meaning of Rule 405 under the Securities Act) of the Issuer or any Guarantor and (iv) if such Holder is a broker-dealer that will receive Exchange Securities for its own account in exchange for Registrable Securities that were acquired as a result of market-making or other trading activities, then such Holder will deliver a Prospectus (or, to the extent permitted by law, make available a Prospectus to purchasers) in connection with any resale of such Exchange Securities.

Upon consummation of the Exchange Offer in accordance with this Section 2, the provisions of this Agreement shall continue to apply, mutatis mutandis, solely with respect to Exchange Securities as to which Section 2(b)(iii) is applicable and Exchange Securities held by Participating Broker-Dealers; provided, however, that the Issuer and the Guarantors shall have no further obligation to register Registrable Securities, or file any Registration Statement in respect thereof, (other than Exchange Securities as to which clause 2(b)(iii) hereof applies) pursuant to this Agreement.

The Exchange Securities shall be issued under (i) the Indenture or (ii) an indenture identical in all material respects to the Indenture and which, in either case, has been qualified under the Trust Indenture Act or is exempt from such qualification and shall provide that the Exchange Securities shall not be subject to the transfer restrictions set forth in the Indenture. The Indenture or such indenture shall provide that the Exchange Securities and the Securities shall vote and consent together on all matters as one class and that none of the Exchange Securities or the Securities will have the right to vote or consent as a separate class on any matter.

As soon as practicable after the last Exchange Date, the Issuer and the Guarantors shall:

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The Issuer and the Guarantors shall use their commercially reasonable efforts to complete the Exchange Offer as provided above and shall comply with the applicable requirements of the Securities Act, the Exchange Act and other applicable laws and regulations in connection with the Exchange Offer. The Exchange Offer shall not be subject to any conditions, other than that the Exchange Offer does not violate any applicable law or applicable interpretations of the Staff.

(b)     In the event that (i) the Issuer and the Guarantors determine that the Exchange Offer Registration provided for in Section 2(a) above is not available or may not be completed as soon as practicable after the last Exchange Date because it would violate any applicable law or applicable interpretations of the Staff, (ii) the Exchange Offer is not for any other reason completed by the Exchange Offer Consummation Deadline or (iii) upon receipt of a written request (a “Shelf Request”) from any Holder representing that it holds Registrable Securities that are or were ineligible to be exchanged in the Exchange Offer, the Issuer and the Guarantors shall use their commercially reasonable efforts to cause to be filed as soon as practicable after such determination, date or Shelf Request, as the case may be, a Shelf Registration Statement providing for the sale of all the Registrable Securities by the Holders thereof and to have such Shelf Registration Statement become effective.

In the event that the Issuer and the Guarantors are required to file a Shelf Registration Statement pursuant to clause (iii) of the preceding sentence, the Issuer and the Guarantors shall use their commercially reasonable efforts to file and have become effective both an Exchange Offer Registration Statement pursuant to Section 2(a) with respect to all Registrable Securities and a Shelf Registration Statement (which may be a combined Registration Statement with the Exchange Offer Registration Statement) with respect to offers and sales of Registrable Securities held by the Holders after completion of the Exchange Offer.

The Issuer and the Guarantors agree to use their commercially reasonable efforts to keep the Shelf Registration Statement continuously effective until the expiration of the period referred to in Rule 144(b)(1) (or any similar rule then in force, but not Rule 144A) under the Securities Act with respect to the Registrable Securities included therein or such shorter period that will terminate when all the Registrable Securities covered by the Shelf Registration Statement have been sold pursuant to the Shelf Registration Statement (the “Shelf Effectiveness Period”). The Issuer and the Guarantors further agree to supplement or amend the Shelf Registration Statement and the related Prospectus if required by the rules, regulations or instructions applicable to the registration form used by the Issuer for such Shelf Registration Statement or by the Securities Act or by any other rules and regulations thereunder or if reasonably requested by a Holder of Registrable Securities with respect to information relating to such Holder, and to use their commercially reasonable efforts to cause any such amendment to become effective, if required, and such Shelf Registration Statement and Prospectus to become usable as soon as thereafter practicable. The Issuer and the Guarantors agree to furnish to the Holders of Registrable Securities copies of any such supplement or amendment promptly after its being filed with the SEC.

(c)    (i)     Until such time as the Exchange Offer pursuant to Section 2(a) hereof has been consummated and, to the extent required pursuant to Section 2(b) hereof, until the Shelf Registration Statement has become effective, if at any time the Issuer proposes to file a Registration Statement under the Securities Act with respect to an underwritten offering by the Issuer for its own account or for the account of any of its respective securityholders of any debt securities of the Issuer (other than a Registration Statement on Form F-4, S-4 or S-8 or similar applicable form, or an S-3 (or similar form used for employee-related sales), then the Issuer shall

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give written notice of such proposed filing to the Holders of the Registrable Securities and each Lender (as defined in the Bridge Loan Agreement) as soon as practicable (but in no event less than 20 Business Days before the anticipated filing date), and such notice shall offer such Holders the opportunity to register such number of Registrable Securities as each such Holder may request (which request shall specify the Registrable Securities intended to be disposed of by such Holder and the intended method of distribution thereof) (a “Piggy-Back Registration”); provided, however, that the Holders of Registrable Securities shall not have a right to a Piggy-Back Registration if the net proceeds from such proposed issuance would be used to redeem or repay in full all of the Registrable Securities and the Loans (to the extent Loans have not been converted into Registrable Securities pursuant to the terms and conditions of the Bridge Loan Agreement). The Issuer and the Guarantors shall use their commercially reasonable efforts to cause the managing underwriter or underwriters of such proposed underwritten offering to permit the Registrable Securities requested to be included in a Piggy-Back Registration to be included on the same terms and conditions as any similar securities of the Issuer or any other securityholder included therein and to permit the sale or other disposition of such Registrable Securities in accordance with the intended method of distribution thereof except as otherwise provided in this Agreement. Any Holder of Registrable Securities shall have the right to withdraw its request for inclusion of its Registrable Securities in any Registration Statement pursuant to this Section 2(c) by giving written notice to the Issuer of its request to withdraw no later than five (5) Business Days before such Registration Statement becomes effective. The Issuer may withdraw a Piggy-Back Registration at any time prior to the time it becomes effective to the extent that it has withdrawn the underlying Registration Statement filed pursuant to Section 2(c); provided that the Issuer shall give prompt notice thereof to participating Holders.

(ii)     No registration effected under this Section 2(c), and no failure to effect a registration under this Section 2(c), shall relieve the Issuer of its obligation to effect a registration on behalf of the Holders as otherwise provided in this Agreement.

(iii)     If the managing underwriter or underwriters of any offering described in this Section 2(c) notify the Holders requesting inclusion of Registrable Securities in such offering, that the kind of securities that the Holders, the Issuer and any other Persons desiring to participate in such registration intend to include in such offering is such as to adversely affect the success of such offering, the Registrable Securities to be included in such offering shall be reduced or excluded in their entirety as mutually agreed in good faith by the Holders and the Issuer.

(d)     The Issuer and the Guarantors shall pay all Registration Expenses in connection with any registration pursuant to Section 2(a), 2(b) or 2(c) hereof. Each Holder shall pay all underwriting discounts and commissions, brokerage commissions and transfer taxes, if any, relating to the sale or disposition of such Holder’s Registrable Securities pursuant to the Shelf Registration Statement.

(e)     An Exchange Offer Registration Statement pursuant to Section 2(a) hereof and a Piggy-Back Registration pursuant to Section 2(c) hereof will not be deemed to have become effective unless it has been declared effective by the SEC. A Shelf Registration Statement pursuant to Section 2(b) hereof will not be deemed to have become effective unless it has been declared effective by the SEC or is automatically effective upon filing with the SEC as provided by Rule 462 under the Securities Act.

In the event that either the Exchange Offer is not completed on or prior to the Exchange Offer Consummation Deadline or the Shelf Registration Statement, if required pursuant to Section 2(b)(i) or 2(b)(ii) hereof, does not become effective on or prior to the date that is 270

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days after the Issue Date (or 360 days if the Issuer receives written notice that the Exchange Offer Registration Statement is to be reviewed by the SEC) (the “Target Registration Date”), the interest rate on the Registrable Securities will be increased by 0.25% per annum on the principal amount of such Registrable Securities for the first 90 days from and including such specified date and at a rate of 0.50% per annum on the principal amount of such Registrable Securities thereafter until the Exchange Offer is completed or the Shelf Registration Statement, if required hereby, becomes effective or the Securities become freely tradable under the Securities Act, as the case may be.

In the event that the Issuer receives a Shelf Request pursuant to Section 2(b)(iii) and the Shelf Registration Statement required to be filed thereby does not become effective by the later of (x) the Target Registration Date or (y) 90 days after the delivery of such Shelf Request (such later date, the “Shelf Additional Interest Date”), then the interest rate on the Registrable Securities will be increased by 0.25% per annum on the principal amount of such Registrable Securities for the first 90 days from and including such specified date and at a rate of 0.50% per annum on the principal amount of such Registrable Securities thereafter until the Shelf Registration Statement becomes effective or the Securities become freely tradable under the Securities Act.

If the Shelf Registration Statement, if required hereby, has become effective and thereafter either ceases to be effective or the Prospectus contained therein ceases to be usable, in each case whether or not permitted by this Agreement, at any time during the Shelf Effectiveness Period, and such failure to remain effective or usable exists for more than 30 days (whether or not consecutive) in any 12-month period, then the interest rate on the Registrable Securities will be increased by 0.25% per annum on the principal amount of such Registrable Securities for the first 90 days from and including such 31^st day in such 12-month period and at a rate of 0.50% per annum on the principal amount of such Registrable Securities thereafter until such date as the Shelf Registration Statement has again become effective or the Prospectus again becomes usable.

Any additional interest required pursuant to this Section 2(e) may be paid in the form of additional Securities. The Issuer shall notify the Trustee within one Business Day after each and every date on which an event occurs in respect of which additional interest is required to be and within one Business Day after such additional interest ceases to accrue. Any amounts of additional interest due pursuant to this Section 2(e) will be payable, at the Issuer’s option, in cash or by issuing new Securities in respect of such amount on each April 15 and October 15 (to the holders of record on the April 1 and October 1 immediately preceding such dates), commencing with the first such date occurring after any such additional interest commences to accrue. The amount of additional interest will be determined by multiplying the applicable additional interest rate by the principal amount of the Registrable Securities, multiplied by a fraction, the numerator of which is the number of days such additional interest rate was applicable during such period (determined on the basis of a 360 day year comprised of twelve 30 day months and, in the case of a partial month, the actual number of days elapsed), and the denominator of which is 360.

(f)     Without limiting the remedies available to the Holders, the Issuer and the Guarantors acknowledge that any failure by the Issuer or the Guarantors to comply with their obligations under Section 2(a) and Section 2(b) hereof may result in material irreparable injury to the Holders for which there is no adequate remedy at law, that it will not be possible to measure damages for such injuries precisely and that, in the event of any such failure, any Holder may obtain such relief as may be required to specifically enforce the Issuer’s and the Guarantors’ obligations under Section 2(a) and Section 2(b) hereof.

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(g)     The Issuer represents, warrants and covenants that it (including its agents and representatives) will not prepare, make, use, authorize, approve or refer to any Free Writing Prospectus without the prior written consent of the Majority Holders.

3.     Registration Procedures.   (a) In connection with their obligations pursuant to Sections 2(a), 2(b) and 2(c) hereof, the Issuer and the Guarantors shall as soon as practicable:

(i)     prepare and file with the SEC a Registration Statement on the appropriate form under the Securities Act, which form (x) shall be selected by the Issuer and the Guarantors, (y) shall, in the case of a Shelf Registration, be available for the sale of the Registrable Securities by the Holders thereof and (z) shall comply as to form in all material respects with the requirements of the applicable form and include all financial statements required by the SEC to be filed therewith; and use their commercially reasonable efforts to cause such Registration Statement to become effective and remain effective for the applicable period in accordance with Section 2 hereof;

(ii)     prepare and file with the SEC such amendments and post-effective amendments to each Registration Statement as may be necessary to keep such Registration Statement effective for the applicable period in accordance with Section 2 hereof and cause each Prospectus to be supplemented by any required prospectus supplement and, as so supplemented, to be filed pursuant to Rule 424 under the Securities Act; and keep each Prospectus current during the period described in Section 4(3) of and Rule 174 under the Securities Act that is applicable to transactions by brokers or dealers with respect to the Registrable Securities or Exchange Securities;

(iii)     in the case of a Shelf Registration, furnish to each Holder of Registrable Securities, to counsel for such Holders and to each Underwriter of an Underwritten Offering of Registrable Securities, if any, without charge, as many copies of each Prospectus or preliminary prospectus, and any amendment or supplement thereto, as such Holder, counsel or Underwriter may reasonably request in order to facilitate the sale or other disposition of the Registrable Securities thereunder; and the Issuer and the Guarantors consent to the use of such Prospectus, preliminary prospectus and any amendment or supplement thereto in accordance with applicable law by each of the Holders of Registrable Securities and any such Underwriters in connection with the offering and sale of the Registrable Securities covered by and in the manner described in such Prospectus, preliminary prospectus or any amendment or supplement thereto in accordance with applicable law;

(iv)     use their commercially reasonable efforts to register or qualify the Registrable Securities under all applicable state securities or blue sky laws of such jurisdictions as any Holder of Registrable Securities covered by a Registration Statement shall reasonably request in writing by the time the applicable Registration Statement becomes effective; cooperate with such Holders in connection with any filings required to be made with the Financial Industry Regulatory Authority; and do any and all other acts and things that may be reasonably necessary or advisable to enable each Holder to complete the disposition in each such jurisdiction of the Registrable Securities owned by such Holder; provided that neither the Issuer nor any Guarantor shall be required to (1) qualify as a foreign corporation or other entity or as a dealer in securities in any such jurisdiction where it would not otherwise be required to so qualify, (2) file any general consent to service of process in any such jurisdiction or (3) subject itself to taxation in any such jurisdiction if it is not so subject;

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(v)     in the case of a Shelf Registration, notify each Holder of Registrable Securities and counsel for such Holders promptly and, if requested by any such Holder or counsel, confirm such advice in writing (1) when a Registration Statement has become effective, when any post-effective amendment thereto has been filed and becomes effective and when any amendment or supplement to the Prospectus has been filed, (2) of any request by the SEC or any state securities authority for amendments and supplements to a Registration Statement or Prospectus or for additional information after the Registration Statement has become effective, (3) of the issuance by the SEC or any state securities authority of any stop order suspending the effectiveness of a Registration Statement or the initiation of any proceedings for that purpose, including the receipt by the Issuer of any notice of objection of the SEC to the use of a Shelf Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Securities Act, (4) if, between the applicable effective date of a Shelf Registration Statement and the closing of any sale of Registrable Securities covered thereby, the representations and warranties of the Issuer or any Guarantor contained in any underwriting agreement, securities sales agreement or other similar agreement, if any, relating to an offering of such Registrable Securities cease to be true and correct in all material respects or if the Issuer or any Guarantor receives any notification with respect to the suspension of the qualification of the Registrable Securities for sale in any jurisdiction or the initiation of any proceeding for such purpose, (5) of the happening of any event during the period a Registration Statement is effective that makes any statement made in such Registration Statement or the related Prospectus untrue in any material respect or that requires the making of any changes in such Registration Statement or Prospectus in order to make the statements therein not misleading and (6) of any determination by the Issuer or any Guarantor that a post-effective amendment to a Registration Statement or any amendment or supplement to the Prospectus would be appropriate;

(vi)     use their commercially reasonable efforts to obtain the withdrawal of any order suspending the effectiveness of a Registration Statement or, in the case of a Shelf Registration, the resolution of any objection of the SEC pursuant to Rule 401(g)(2), including by filing an amendment to such Shelf Registration Statement on the proper form, as soon as practicable and provide immediate notice to each Holder of the withdrawal of any such order or such resolution;

(vii)     in the case of a Shelf Registration, furnish to each Holder of Registrable Securities, without charge, at least one conformed copy of each Registration Statement and any post-effective amendment thereto (without any documents incorporated therein by reference or exhibits thereto, unless requested);

(viii)     in the case of a Shelf Registration, cooperate with the Holders of Registrable Securities to facilitate the timely preparation and delivery of certificates in accordance with the terms of the Indenture representing Registrable Securities to be sold and not bearing any restrictive legends and enable such Registrable Securities to be issued in such denominations and registered in such names (consistent with the provisions of the Indenture) as such Holders may reasonably request at least one Business Day prior to the closing of any sale of Registrable Securities;

(ix)     in the case of a Shelf Registration, upon the occurrence of any event contemplated by Section 3(a)(v)(5) hereof, use their commercially reasonable efforts to prepare and file with the SEC a supplement or post-effective amendment to such Shelf Registration Statement or the related Prospectus or any document incorporated therein by reference or file any other required document so that, as thereafter delivered (or, to the extent permitted by law, made available) to purchasers of the Registrable Securities, such Prospectus will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements

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therein, in the light of the circumstances under which they were made, not misleading; and the Issuer and the Guarantors shall notify the Holders of Registrable Securities to suspend use of the Prospectus as promptly as practicable after the occurrence of such an event, and such Holders hereby agree to suspend use of the Prospectus until the Issuer and the Guarantors have amended or supplemented the Prospectus to correct such misstatement or omission;

(x)     in the case of a Shelf Registration, a reasonable time prior to the filing of any Registration Statement, any Prospectus, any amendment to a Registration Statement or amendment or supplement to a Prospectus or of any document that is to be incorporated by reference into a Registration Statement or a Prospectus after initial filing of a Registration Statement, provide copies of such document to the Holders of Registrable Securities and their counsel and make such of the representatives of the Issuer and the Guarantors as shall be reasonably requested by the Holders of Registrable Securities or their counsel available for discussion of such document; and the Issuer and the Guarantors shall not, at any time after initial filing of a Registration Statement, use or file any Prospectus, any amendment of or supplement to a Registration Statement or a Prospectus, or any document that is to be incorporated by reference into a Registration Statement or a Prospectus, of which the Holders of Registrable Securities and their counsel shall not have previously been advised and furnished a copy or to which the Holders of Registrable Securities or their counsel shall object;

(xi)     obtain a CUSIP number for all Exchange Securities or Registrable Securities, as the case may be, not later than the initial effective date of a Registration Statement;

(xii)     cause the Indenture to be qualified under the Trust Indenture Act in connection with the registration of the Exchange Securities or Registrable Securities, as the case may be; cooperate with the Trustee and the Holders to effect such changes to the Indenture as may be required for the Indenture to be so qualified in accordance with the terms of the Trust Indenture Act; and execute, and use their commercially reasonable efforts to cause the Trustee to execute, all documents as may be required to effect such changes and all other forms and documents required to be filed with the SEC to enable the Indenture to be so qualified in a timely manner;

(xiii)     in the case of a Shelf Registration, make available for inspection by a representative of the Holders of the Registrable Securities (an “Inspector”), any Underwriter participating in any disposition pursuant to such Shelf Registration Statement, any attorneys and accountants designated by a majority of the Holders of Registrable Securities to be included in such Shelf Registration and any attorneys and accountants designated by such Underwriter, at reasonable times and in a reasonable manner, all pertinent financial and other records, documents and properties of the Issuer and its subsidiaries, and cause the respective officers, directors and employees of the Issuer and the Guarantors to supply all information reasonably requested by any such Inspector, Underwriter, attorney or accountant in connection with a Shelf Registration Statement; provided that if any such information is identified by the Issuer or any Guarantor in writing as being confidential or proprietary, each Person receiving such information shall take such actions as are reasonably necessary to protect the confidentiality of such information (including, to the extent requested in writing by the Issuer or any Guarantor, executing and delivering a customary confidentiality or similar agreement) to the extent such action is otherwise not inconsistent with, an impairment of or in derogation of the rights and interests of any Inspector, Holder or Underwriter;

(xiv)     in the case of a Shelf Registration, use their commercially reasonable efforts to cause all Registrable Securities to be listed on any securities exchange or any automated quotation system on which similar securities issued or guaranteed by the Issuer or any Guarantor

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are then listed if requested by the Majority Holders, to the extent such Registrable Securities satisfy applicable listing requirements;

(xv)     if reasonably requested by any Holder of Registrable Securities covered by a Shelf Registration Statement, promptly include in a Prospectus supplement or post-effective amendment such information with respect to such Holder as such Holder reasonably requests to be included therein and make all required filings of such Prospectus supplement or such post-effective amendment as soon as the Issuer has received notification of the matters to be so included in such filing;

(xvi)     in the case of a Shelf Registration, enter into such customary agreements and take all such other actions in connection therewith (including those requested by the Holders of a majority in principal amount of the Registrable Securities covered by the Shelf Registration Statement) in order to expedite or facilitate the disposition of such Registrable Securities including, but not limited to, an Underwritten Offering and in such connection, (1) to the extent possible, make such representations and warranties to the Holders and any Underwriters of such Registrable Securities with respect to the business of the Issuer and its subsidiaries and the Registration Statement, Prospectus and documents incorporated by reference or deemed incorporated by reference, if any, in each case, in form, substance and scope as are customarily made by issuers to underwriters in underwritten offerings and confirm the same if and when requested, (2) obtain opinions of counsel to the Issuer and the Guarantors (which counsel and opinions, in form, scope and substance, shall be reasonably satisfactory to the Holders and such Underwriters and their respective counsel) addressed to each Underwriter of Registrable Securities, covering the matters customarily covered in opinions requested in underwritten offerings, (3) obtain “comfort” letters from the independent registered public accounting firm of the Issuer and the Guarantors (and, if necessary, any other registered public accounting firm of any subsidiary of the Issuer or any Guarantor, or of any business acquired by the Issuer or any Guarantor for which financial statements and financial data are or are required to be included in the Registration Statement) addressed to each Underwriter of Registrable Securities, such letters to be in customary form and covering matters of the type customarily covered in “comfort” letters in connection with underwritten offerings, including but not limited to financial information contained in any preliminary prospectus or Prospectus and (4) deliver such documents and certificates as may be reasonably requested by the Holders of a majority in principal amount of the Registrable Securities being sold or the Underwriters, and which are customarily delivered in underwritten offerings, to evidence the continued validity of the representations and warranties of the Issuer and the Guarantors made pursuant to clause (1) above and to evidence compliance with any customary conditions contained in an underwriting agreement; and

(xvii)     so long as any Registrable Securities remain outstanding, cause each Additional Guarantor upon the creation or acquisition by the Issuer of such Additional Guarantor, to execute a counterpart to this Agreement in the form attached hereto as Annex B and to deliver such counterpart, together with an opinion of counsel as to the enforceability thereof against such entity, to the Holders no later than five Business Days following the execution thereof.

(b)     In the case of a Shelf Registration Statement, the Issuer may require each Holder of Registrable Securities to furnish to the Issuer such information regarding such Holder and the proposed disposition by such Holder of such Registrable Securities as the Issuer and the Guarantors may from time to time reasonably request in writing.

(c)     In the case of a Shelf Registration Statement, each Holder of Registrable Securities covered in such Shelf Registration Statement agrees that, upon receipt of any notice

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from the Issuer and the Guarantors of the happening of any event of the kind described in Section 3(a)(v)(3) or 3(a)(v)(5) hereof, such Holder will forthwith discontinue disposition of Registrable Securities pursuant to the Shelf Registration Statement until such Holder’s receipt of the copies of the supplemented or amended Prospectus contemplated by Section 3(a)(ix) hereof and, if so directed by the Issuer and the Guarantors, such Holder will deliver to the Issuer and the Guarantors all copies in its possession, other than permanent file copies then in such Holder’s possession, of the Prospectus covering such Registrable Securities that is current at the time of receipt of such notice.

(d)     If the Issuer and the Guarantors shall give any notice to suspend the disposition of Registrable Securities pursuant to a Registration Statement, the Issuer and the Guarantors shall extend the period during which such Registration Statement shall be maintained effective pursuant to this Agreement by the number of days during the period from and including the date of the giving of such notice to and including the date when the Holders of such Registrable Securities shall have received copies of the supplemented or amended Prospectus necessary to resume such dispositions. The Issuer and the Guarantors may give any such notice only twice during any 365-day period and any such suspensions shall not exceed 30 days for each suspension and there shall not be more than two suspensions in effect during any 365-day period.

(e)     The Holders of Registrable Securities covered by a Shelf Registration Statement who desire to do so may sell such Registrable Securities in an Underwritten Offering. In any such Underwritten Offering, the investment bank or investment banks and manager or managers (each an “Underwriter”) that will administer the offering will be selected by the Holders of a majority of the outstanding aggregate principal amount of the Registrable Securities included in such offering.

4.     Participation of Broker-Dealers in Exchange Offer.   (a)   The Staff has taken the position that any broker-dealer that receives Exchange Securities for its own account in the Exchange Offer in exchange for Securities that were acquired by such broker-dealer as a result of market-making or other trading activities (a “Participating Broker-Dealer”) may be deemed to be an “underwriter” within the meaning of the Securities Act and must deliver a prospectus meeting the requirements of the Securities Act in connection with any resale of such Exchange Securities.

The Issuer and the Guarantors understand that it is the Staff’s position that if the Prospectus contained in the Exchange Offer Registration Statement includes a plan of distribution containing a statement to the above effect and the means by which Participating Broker-Dealers may resell the Exchange Securities, without naming the Participating Broker-Dealers or specifying the amount of Exchange Securities owned by them, such Prospectus may be delivered by Participating Broker-Dealers (or, to the extent permitted by law, made available to purchasers) to satisfy their prospectus delivery obligation under the Securities Act in connection with resales of Exchange Securities for their own accounts, so long as the Prospectus otherwise meets the requirements of the Securities Act.

(b)     In light of the above, and notwithstanding the other provisions of this Agreement, the Issuer and the Guarantors agree to amend or supplement the Prospectus contained in the Exchange Offer Registration Statement for a period of up to 180 days after the last Exchange Date (as such period may be extended pursuant to Section 3(d) of this Agreement), in order to expedite or facilitate the disposition of any Exchange Securities by Participating Broker-Dealers consistent with the positions of the Staff recited in Section 4(a) above. The Issuer and the Guarantors further agree that Participating Broker-Dealers shall be authorized to deliver such

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Prospectus (or, to the extent permitted by law, make available) during such period in connection with the resales contemplated by this Section 4.

(c)     The Participating Broker-Dealers shall have no liability to the Issuer, any Guarantor or any Holder with respect to any request that they may make pursuant to Section 4(b) above.

5.     Indemnification and Contribution.   (a)   The Issuer and each Guarantor, jointly and severally, agree to indemnify and hold harmless (i) each Holder, its respective affiliates, directors and officers and each Person, if any, who controls any Holder within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act, from and against any and all losses, claims, damages and liabilities (including, without limitation, legal fees and other expenses incurred in connection with any suit, action or proceeding or any claim asserted, as such fees and expenses are incurred), joint or several, that arise out of, or are based upon, (1) any untrue statement or alleged untrue statement of a material fact contained in any Registration Statement or any omission or alleged omission to state therein a material fact required to be stated therein or necessary in order to make the statements therein not misleading, or (2) any untrue statement or alleged untrue statement of a material fact contained in any Prospectus, any Free Writing Prospectus used in violation of this Agreement or any “issuer information” (“Issuer Information”) filed or required to be filed pursuant to Rule 433(d) under the Securities Act, or any omission or alleged omission to state therein a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case except insofar as such losses, claims, damages or liabilities arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to any Holder furnished to the Issuer in writing by such Holder expressly for use therein. In connection with any Underwritten Offering permitted by Section 3, the Issuer and the Guarantors, jointly and severally, will also indemnify the Underwriters in such Underwritten Offering, their respective affiliates and each Person who controls such Persons (within the meaning of the Securities Act and the Exchange Act) to the same extent as provided above with respect to the indemnification of the Holders, if requested in connection with any Registration Statement, any Prospectus, any Free Writing Prospectus or any Issuer Information.

(b)     Each Holder agrees, severally and not jointly, to indemnify and hold harmless the Issuer, the Guarantors, the other selling Holders, the directors of the Issuer and the Guarantors, each officer of the Issuer and the Guarantors who signed the Registration Statement and each Person, if any, who controls the Issuer, the Guarantors or any other selling Holder within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act to the same extent as the indemnity set forth in paragraph (a) above, but only with respect to any losses, claims, damages or liabilities that arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to such Holder furnished to the Issuer in writing by such Holder expressly for use in any Registration Statement and any Prospectus.

(c)     If any suit, action, proceeding (including any governmental or regulatory investigation), claim or demand shall be brought or asserted against any Person in respect of which indemnification may be sought pursuant to either paragraph (a) or (b) above, such Person (the “Indemnified Person”) shall promptly notify the Person against whom such indemnification may be sought (the “Indemnifying Person”) in writing; provided that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have under this Section 5 except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights

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or defenses) by such failure; and provided, further, that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have to an Indemnified Person otherwise than under this Section 5. If any such proceeding shall be brought or asserted against an Indemnified Person and it shall have notified the Indemnifying Person thereof, the Indemnifying Person shall retain counsel reasonably satisfactory to the Indemnified Person to represent the Indemnified Person and any others entitled to indemnification pursuant to this Section 5 that the Indemnifying Person may designate in such proceeding and shall pay the fees and expenses of such proceeding and shall pay the fees and expenses of such counsel related to such proceeding, as incurred. In any such proceeding, any Indemnified Person shall have the right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such Indemnified Person unless (i) the Indemnifying Person and the Indemnified Person shall have mutually agreed to the contrary; (ii) the Indemnifying Person has failed within a reasonable time to retain counsel reasonably satisfactory to the Indemnified Person; (iii) the Indemnified Person shall have reasonably concluded that there may be legal defenses available to it that are different from or in addition to those available to the Indemnifying Person; or (iv) the named parties in any such proceeding (including any impleaded parties) include both the Indemnifying Person and the Indemnified Person and representation of both parties by the same counsel would be inappropriate due to actual or potential differing interests between them. It is understood and agreed that the Indemnifying Person shall not, in connection with any proceeding or related proceeding in the same jurisdiction, be liable for the fees and expenses of more than one separate firm (in addition to any local counsel) for all Indemnified Persons, and that all such fees and expenses shall be reimbursed as they are incurred. Any such separate firm for any Holder, its directors and officers and any control Persons of such Holder shall be designated in writing by the Majority Holders and (z) in all other cases shall be designated in writing by the Issuer. The Indemnifying Person shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the Indemnifying Person agrees to indemnify each Indemnified Person from and against any loss or liability by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an Indemnified Person shall have requested that an Indemnifying Person reimburse the Indemnified Person for fees and expenses of counsel as contemplated by this paragraph, the Indemnifying Person shall be liable for any settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than 30 days after receipt by the Indemnifying Person of such request and (ii) the Indemnifying Person shall not have reimbursed the Indemnified Person in accordance with such request prior to the date of such settlement. No Indemnifying Person shall, without the written consent of the Indemnified Person, effect any settlement of any pending or threatened proceeding in respect of which any Indemnified Person is or could have been a party and indemnification could have been sought hereunder by such Indemnified Person, unless such settlement (A) includes an unconditional release of such Indemnified Person, in form and substance reasonably satisfactory to such Indemnified Person, from all liability on claims that are the subject matter of such proceeding and (B) does not include any statement as to or any admission of fault, culpability or a failure to act by or on behalf of any Indemnified Person.

(d)     If the indemnification provided for in paragraphs (a) and (b) above is unavailable to an Indemnified Person or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each Indemnifying Person under such paragraph, in lieu of indemnifying such Indemnified Person thereunder, shall contribute to the amount paid or payable by such Indemnified Person as a result of such losses, claims, damages or liabilities (i) in such proportion as is appropriate to reflect the relative benefits received by the Issuer and the Guarantors from the offering of the Securities and the Exchange Securities, on the one hand, and by the Holders from receiving Securities or Exchange Securities registered under the Securities Act, on the other hand, or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such

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proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) but also the relative fault of the Issuer and the Guarantors on the one hand and the Holders on the other in connection with the statements or omissions that resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative fault of the Issuer and the Guarantors on the one hand and the Holders on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Issuer and the Guarantors or by the Holders and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

(e)     The Issuer, the Guarantors and the Holders agree that it would not be just and equitable if contribution pursuant to this Section 5 were determined by pro rata allocation (even if the Holders were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in paragraph (d) above. The amount paid or payable by an Indemnified Person as a result of the losses, claims, damages and liabilities referred to in paragraph (d) above shall be deemed to include, subject to the limitations set forth above, any legal or other expenses incurred by such Indemnified Person in connection with any such action or claim. Notwithstanding the provisions of this Section 5, in no event shall a Holder be required to contribute any amount in excess of the amount by which the total price at which the Registrable Securities sold by such Holder exceeds the amount of any damages that such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation. The Holders’ obligations to contribute pursuant to this Section 5 are several and not joint.

(f)     The remedies provided for in this Section 5 are not exclusive and shall not limit any rights or remedies that may otherwise be available to any Indemnified Person at law or in equity.

(g)     The indemnity and contribution provisions contained in this Section 5 shall remain operative and in full force and effect regardless of (i) any termination of this Agreement, (ii) any investigation made by or on behalf of any Holder or any Person controlling any Holder, or by or on behalf of the Issuer or the Guarantors or the officers or directors of or any Person controlling the Issuer or the Guarantors, (iii) acceptance of any of the Exchange Securities and (iv) any sale of Registrable Securities pursuant to a Shelf Registration Statement.

6     General.

(a)     No Inconsistent Agreements.   The Issuer and the Guarantors represent, warrant and agree that (i) the rights granted to the Holders hereunder do not in any way conflict with and are not inconsistent with the rights granted to the holders of any other outstanding securities issued or guaranteed by the Issuer or any Guarantor under any other agreement and (ii) neither the Issuer nor any Guarantor has entered into, or on or after the date of this Agreement will enter into, any agreement that is inconsistent with the rights granted to the Holders of Registrable Securities in this Agreement or otherwise conflicts with the provisions hereof.

(b)     Amendments and Waivers.   The provisions of this Agreement, including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given unless the Issuer and the Guarantors have obtained the written consent of (i) Holders of at least a majority in aggregate

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principal amount of the outstanding Registrable Securities affected by such amendment, modification, supplement, waiver or consent and the Required Lenders (as defined in the Bridge Loan Agreement) and (ii) in circumstances that would adversely affect the Participating Broker-Dealers, the Participating Broker-Dealers; provided that no amendment, modification, supplement, waiver or consent to any departure from the provisions of Section 5 hereof shall be effective as against any Holder of Registrable Securities and each Participating Broker-Dealer (including any person who was a Holder or Participating Broker-Dealer of Registrable Securities or Exchange Securities, as the case may be, disposed of pursuant to any Registration Statement) unless consented to in writing by such Holder and such Participating Broker-Dealer. Any amendments, modifications, supplements, waivers or consents pursuant to this Section 6(b) shall be by a writing executed by each of the parties hereto.

(c)     Notices.   All notices and other communications provided for or permitted hereunder shall be made in writing by hand-delivery, registered first-class mail, telex, telecopier, or any courier guaranteeing overnight delivery:

(i) if to a Holder, at the most current address given by such Holder set forth on the records of the registrar under the Indenture, with a copy in like manner as follows:

Milbank, Tweed, Hadley & McCloy LLP

1 Chase Manhattan Plaza

New York, New York 10005

Attention: John H. Cobb

(ii) if to the Issuer and the Guarantors,

CDW Corporation

200 N. Milwaukee Avenue

Vernon Hills, IL 60061

Facsimile: (847)  ###-###-####

Attention: Chief Financial Officer

With a copy to:

Kirkland & Ellis LLP

200 East Randolph Drive

Chicago, Illinois 60601

Facsimile: (312)  ###-###-####

Attention: James S. Rowe

and thereafter at such other address, notice of which is given in accordance with the provisions of this Section 6(c); and

(iii) to such other persons at their respective addresses as provided in the Indenture and thereafter at such other address, notice of which is given in accordance with the provisions of this Section 6(c).

All such notices and communications shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; five Business Days after being deposited in the mail, postage prepaid, if mailed; when answered back, if telexed; when receipt is acknowledged, if telecopied; and on the next Business Day if timely delivered to an air courier guaranteeing

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overnight delivery. Copies of all such notices, demands or other communications shall be concurrently delivered by the Person giving the same to the Trustee, at the address specified in the Indenture.

(d)     Successors and Assigns.   This Agreement shall inure to the benefit of and be binding upon the successors, assigns and transferees of each of the parties, including, without limitation and without the need for an express assignment, subsequent Holders; provided that nothing herein shall be deemed to permit any assignment, transfer or other disposition of Registrable Securities in violation of the terms of the Indenture. If any transferee of any Holder shall acquire Registrable Securities in any manner, whether by operation of law or otherwise, such Registrable Securities shall be held subject to all the terms of this Agreement, and by taking and holding such Registrable Securities such Person shall be conclusively deemed to have agreed to be bound by and to perform all of the terms and provisions of this Agreement and such Person shall be entitled to receive the benefits hereof. Each Holder shall have no liability or obligation to the Issuer or the Guarantors or any other Holder with respect to any failure by any other Holder to comply with, or any breach by any other Holder of, any of the obligations of such other Holder under this Agreement.

(e)     Third Party Beneficiaries.   Each Holder shall be a third party beneficiary to the agreements made hereunder between the Issuer and the Guarantors, on the one hand, and the Lenders (as defined in the Bridge Loan Agreement) that exchange Loans for Exchange Securities pursuant to the Bridge Loan Agreement, on the other hand, and shall have the right to enforce such agreements directly to the extent it deems such enforcement necessary or advisable to protect its rights or the rights of other Holders hereunder.

(f)     Counterparts.   This Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement.

(g)     Headings.   The headings in this Agreement are for convenience of reference only, are not a part of this Agreement and shall not limit or otherwise affect the meaning hereof.

(h)     Governing Law.   This Agreement shall be governed by and construed in accordance with the laws of the State of New York.

(j)     Entire Agreement; Severability.   This Agreement contains the entire agreement between the parties relating to the subject matter hereof and supersedes all oral statements and prior writings with respect thereto. If any term, provision, covenant or restriction contained in this Agreement is held by a court of competent jurisdiction to be invalid, void or unenforceable or against public policy, the remainder of the terms, provisions, covenants and restrictions contained herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated. The Issuer, the Guarantors and the Holders shall endeavor in good faith negotiations to replace the invalid, void or unenforceable provisions with valid provisions the economic effect of which comes as close as possible to that of the invalid, void or unenforceable provisions.

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IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

Annex A

Form of Joinder

Upon execution of this joinder the undersigned shall, as of the date set forth below, become a party to the Senior Registration Rights Agreement, dated as of October 10, 2008, entered into by and among CDW Corporation and the Guarantors and the various Holders party thereto, and hereby agrees, as a Holder (i) to be bound by all of the terms, conditions, agreements, obligations, acknowledgements and restrictions of a Holder and (ii) to assume and agree to perform all applicable duties and obligations of a Holder, each on the terms set forth therein, as of and from the date hereof.

Dated                         , 200_

Annex B

Counterpart to Senior Registration Rights Agreement

The undersigned hereby absolutely, unconditionally and irrevocably agrees as a Guarantor (as defined in the Senior Registration Rights Agreement, dated as of October 10, 2008 by and among the Issuer, an Illinois corporation, the guarantors party thereto and the Holders) to be bound by the terms and provisions of such Senior Subordinated Registration Rights Agreement.

IN WITNESS WHEREOF, the undersigned has executed this counterpart as of                             .