JOINT FILING UNDERTAKING
The undersigned, being authorized thereunto, hereby execute this agreement as
an exhibit to this Schedule 13G to evidence the agreement of the below-named
parties, in accordance with rules promulgated pursuant to the Securities
Exchange Act of 1934, to file this Schedule, as it may be amended, jointly on
behalf of each of such parties.
DATED: January 27, 2004.
XXXXXXXXX & XXXXX CALIFORNIA
By:________________________________
Xxxxxx X. Xxxxxxxxxx
General Counsel and Secretary
H&Q YOU TOOLS INVESTMENT
HOLDING, L.P.
By:________________________________
Xxxxxx X. Xxxxxxxxxxxx
Attorney-in-Fact
XXXXXXXXX & XXXXX EMPLOYEE VENTURE
FUND, X.X. XX
By:________________________________
Xxxxx Xxxxxx
Manager of its General Partner
H&Q YOU TOOLS INVESTMENT
MANAGEMENT, LLC
By:________________________________
Xxxxxx X. Xxxxxxxxxxxx
Attorey-in-Fact
H&Q VENTURE MANAGEMENT, L.L.C.
By:________________________________
Xxxxx Xxxxxx
Manager