Exhibit 10.1(b) [LOGO]

Exhibit 10.1(b)

[LOGO]

A French société anonyme with Executive Board and Supervisory Board,

capitalized at 423,120 €

Registered offices: 17, Place de la Résistance – 92130 Issy-les-Moulineaux

Nanterre Trade Register 412 027 492

AMENDMENT TO THE

CONVERTIBLE BOND ISSUE AGREEMENT

BY AND BETWEEN THE UNDERSIGNED:

hereinafter the “Issuer” or the “Company”;

Party of the first part;

referred to hereinafter together as the “Officers”;

Messrs. Stéphane Schmoll and Luc Chambon are hereinafter designated together as the “Executive Board”;

Party of the second part;

hereinafter referred to collectively as the “Subscribers”, acting without joint liability;

Party of the third part;

referred to hereinafter collectively as the “Group A Subscribers”, acting without joint liability;

Party of the fourth part;

The parties are hereinafter individually referred to as a “Party” and collectively as the “Parties”.

WHEREAS:

The Parties have agreed on the need to increase the equity capital of the Company by implementing a short-term financing for the enterprise.

In order to structure this short-term financing, in a Special Shareholders’ Meeting held on February 21, 2003, the Parties adopted the first resolution authorizing the Executive Board to issue bonds convertible into shares of the Company (hereinafter the “CB”), and maintain the shareholders’ preemptive subscription right.

The Group A Subscribers have decided to limit the total subscription of the Group A Shareholders to Eight Hundred Twenty-Six Thousand Nine Hundred Ninety-Five (826,995) euros, with the balance of the issue, which is One Million One Hundred Seventy-Three Thousand (1,173,000) euros to be fully subscribed by the Subscribers (owners of Class B or C shares of Company stock) as allotted subscriptions and subscriptions to additional shares.

Following the operations for the issue of the CB, the Company verified the presence of a material error in the CB issue agreement dated March 20, 2003 (hereinafter the “Agreement”). The purpose of this amendment is to correct said material error.

NOW, THEREFORE, IT HAS BEEN AGREED AS FOLLOWS:

article 1 – CORRECTION OF THE TABLE OF SUBSCRIPTION COMMITMENTS

The table summarizing the subscription commitment of the Subscribers and the Group A Subscribers inserted in Article 3 (Commitment of the Parties) is hereby amended for the line “Mrs. Anne Bateson”, in order to make the number of CB subscribed consistent with the amount in euros which she subscribed, and is now:

ARTICLE 2 – INTERPRETATION

2.1 All other provisions of the Agreement remain unchanged.

2.2 All capitalized terms used in this amendment have the same meanings as defined in the Agreement, unless defined otherwise in this amendment.

Executed in fifteen (15) originals, with each Party initialing and signing its own copy;

Paris, March 25, 2003.