EX-99.1 2 b38330ciex99-1.txt AGREEMENT 1 CUSIP No.218875 10 2 Exhibit I AGREEMENT Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of the shares of Common Stock of Corio, Inc. EXECUTED as a sealed instrument this 13TH day of February, 2001. GREYLOCK IX LIMITED PARTNERSHIP By: Greylock IX GP Limited Partnership General Partner By: /S/ WILLIAM W. HELMAN --------------------------------------------- William W. Helman Co-Managing General Partner GREYLOCK IX GP LIMITED PARTNERSHIP By: /S/ WILLIAM W. HELMAN -------------------------------------------------- William W. Helman Co-Managing General Partner /S/ WILLIAM W. HELMAN ---------------------------------------------------- William W. Helman /S/ WILLIAM S. KAISER ---------------------------------------------------- William S. Kaiser Page 9 of 9 pages