JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)Joint Filing Agreement • March 21st, 2006 • Parthenon Investors Ii L P • Electronic computers
The undersigned acknowledge and agree that the foregoing statement onSchedule 13G is filed on behalf of each of the undersigned and that allsubsequent amendments to this statement on Schedule 13G shall be filed on behalfof each of the undersigned without the necessity of filing additional jointfiling statements. The undersigned acknowledge that each shall be responsiblefor the timely filing of such amendments, and for the completeness and accuracyof the information concerning him, her or it contained herein, but shall not beresponsible for the completeness and accuracy of the information concerning theother entities or persons, except to the extent that he, she or it knows or hasreason to believe that such information is inaccurate.
