Exhibit 10.37

August 9, 2004

Mr. Ross Curtis
Senior Vice President – Global Sales and Support
Global eXchange Services, Inc.

Dear Ross:

     This letter will confirm our agreement concerning the amendments to your
Employment Agreement dated January 6, 2003 among Global eXchange Services, Inc.,
GXS Holdings, Inc. and you (the “Agreement”). Capitalized terms used in this
letter that are not otherwise defined shall have the same meaning as set forth
in the Agreement.

     During the term of your employment, but in no event after December 31,
2007, the Company will pay, or reimburse you for, travel expenses for your
travel between the Company’s headquarters in Gaithersburg, Maryland and your
homes in Greenwich, Connecticut and Westerly, Rhode Island up to a maximum
amount of $20,000 per calendar year. Such payments and reimbursements shall be
included as part of your compensation under the Agreement.

     Except as specifically modified by this letter, all other terms and
conditions of the Agreement shall remain in full force and effect. If this
letter accurately confirms our agreement, please signify such acceptance by
signing in the space provided below and returning a copy of this letter to Bruce
Hunter.

Sincerely,
GXS Holdings, Inc.

by: /s/ Bruce Hunter

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Global eXchange Services, Inc.

by: /s/ Bruce Hunter

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Accepted this 9th day of August 2004

/s/ Ross Curtis

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Ross Curtis