EX-99.1 2 wpv899386c.txt JOINT FILING AGREEMENT Exhibit 1 --------- Joint Filing Agreement Joint Filing Agreement The undersigned hereby agree that the statement on Schedule 13D filed by the undersigned with respect to the Common Stock, $0.001 par value is, and any amendment thereto signed by each of the undersigned shall be, filed on behalf of each undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. Dated: May 23, 2001 WARBURG, PINCUS & CO. By: /s/ Scott Arenare ----------------------------------- Name: Scott Arenare Title: Attorney-in-Fact Dated: May 23, 2001 WARBURG PINCUS LLC By: /s/ Scott Arenare ----------------------------------- Name: Scott Arenare Title: Attorney-in-Fact Dated: May 23, 2001 WARBURG, PINCUS VENTURES, L.P. By: Warburg, Pincus & Co., General Partner By: /s/ Scott Arenare ----------------------------------- Name: Scott Arenare Title: Attorney-in-Fact