March 31, 1999
LaSalle National Bank
135 South LaSalle Street
Chicago, Illinois 60674
Re: ACS Funding Trust I Lock-Box No.: 4522 Lock-Box Account No. 8601046967
Ladies and Gentlemen:
ACS Funding Trust I (the "Assignor") hereby notifies you that in connection with certain transactions involving the
Assignor's accounts receivables, the Assignor will transfer exclusive ownership and control of its lock-box
number 4522 (the "Lock-Box") and the corresponding lock-box account no. 8601046967 maintained with you
(the "Lock-Box Account") to First Union Capital Markets Corp., as deal agent (the "Agent"). These transfers will
become effective upon your receipt of a notice of effectiveness, substantially in the form attached hereto as
Attachment 1 (the "Notice of Effectiveness"), which shall be delivered via facsimile transmission to your attention.
Except as specifically stated herein, the Wholesale Lockbox Mail Service Agreement between you and the
Assignor ("Lockbox Mail Service Agreement") shall remain in full force and effect and is hereby acknowledged.
The execution, delivery and effectiveness of this Agreement shall not operate as a waiver of any right, power or
remedy you have under the Lockbox Mail Service Agreement, nor constitute a waiver or any provision of the
Lockbox Mail Service Agreement, except as specifically set forth herein. You may rely upon the contents of any
Notice of Effectiveness or any other instructions you reasonably believe in good faith are those of the Agent. You
have no obligation or responsibility to determine or verify any statements contained in any Notice of Effectiveness
or any other instructions.
In connection with the foregoing, the Assignor and the Agent hereby instruct you, beginning on the date of receipt
of the Notice of Effectiveness: (i) to collect the monies, checks, instruments and other items of payment mailed to
the Lock-Box, (ii) to deposit into the Lock-Box Account all such monies, checks, instruments and othe