AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13G

Exhibit A

AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13G

The undersigned hereby agree as follows:

(i)            Each of them is individually eligible to use the Schedule 13G to which this Exhibit is attached, and such Schedule 13G is filed on behalf of each of them; and

(ii)           Each of them is responsible for the timely filing of such Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but no of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

	Date:	February 12, 2003
	GOLDER, THOMA, XXXXXXX, XXXXXX FUND V, L.P.
	By: Its:	GTCR Partners V, L.P. General Partner
	By:	/s/ Xxxxx X. Xxxxxxx
		Xxxxx X. Xxxxxxx/Principal
	GTCR ASSOCIATES V
	By: Its:	Golder, Thoma, Cressey, Rauner, Inc. Managing General Partner
	By:	/s/ Xxxxx X. Xxxxxxx
		Xxxxx X. Xxxxxxx/Principal

1

	GTCR FUND VI, L.P.
	By: Its: By: Its:	GTCR Partners VI, L.P. General Partner GTCR Xxxxxx Xxxxxx, L.L.C. General Partner
	By:	/s/ Xxxxx X. Xxxxxxx
		Xxxxx X. Xxxxxxx/Principal
	GTCR VI EXECUTIVE FUND, L.P.
	By: Its: By: Its:	GTCR Partners VI, L.P. General Partner GTCR Xxxxxx Xxxxxx, L.L.C. General Partner
	By:	/s/ Xxxxx X. Xxxxxxx
		Xxxxx X. Xxxxxxx/Principal
	GTCR ASSOCIATES VI
	By: Its: By: Its:	GTCR Partners VI, L.P. Managing General Partner GTCR Xxxxxx Xxxxxx, L.L.C. General Partner
	By:	/s/ Xxxxx X. Xxxxxxx
		Xxxxx X. Xxxxxxx/Principal
	GOLDER, THOMA, CRESSEY, RAUNER, INC.
	By:	/s/ Xxxxx X. Xxxxxxx
		Xxxxx X. Xxxxxxx/Principal

2

	GTCR XXXXXX XXXXXX, L.L.C.
	By:	/s/ Xxxxx X. Xxxxxxx
		Xxxxxx X. Xxxxxxx/Principal

3