BETWEEN FORTIS INSURANCE COMPANY AND NATIONAL ADMINISTRATION COMPANY

Exhibit 10.33

AMENDMENT TO THE AGREEMENT

BETWEEN

FORTIS INSURANCE COMPANY

AND

NATIONAL ADMINISTRATION COMPANY

This amendment to the Agreement by and between National Administration Company (“NAC”) and Fortis Insurance Company and its affiliates Fortis Benefits Insurance Company and John Alden Life Insurance Company (“Insurer”), entered into September 1, 2003 (the “Agreement”) is effective May 1, 2005.

WHEREAS, the parties to this Agreement desire to amend certain terms of the Agreement; and

WHEREAS, the parties have agreed to such amendments;

NOW THEREFORE, the parties set forth the following modifications to the Agreement:

All other terms and conditions of the Agreement shall remain in full force and effect. In the event of a conflict between the terms of the Agreement and the terms of this Amendment, the terms of this Amendment will control.

IN WITNESS WHEREOF, the parties have executed this Amendment by duly authorized officers of each party.

EXHIBIT A

NAC agrees that it will administer the following benefits and Membership Types for the Association as defined in section I and II below. NAC shall not modify the benefits available, the benefits associated with each Membership Type, or select vendors for these benefits without Insurer’s prior approval, which shall not be withheld unreasonably.

I. Basic Membership

II. SuiteSolution Membership Types

Association memberships under the Agreement shall include SuiteSolution memberships. SuiteSolution memberships shall include SecureSolution and SelectSolution memberships. The benefits attributable to these memberships shall be:

EXHIBIT B