0000950137-06-008911 10-Q 6 20060630 20060809 20060809 CDW CORP 0000899171 5961 363310735 IL 1231 10-Q 34 000-21796 061016784 200 N MILWAUKEE AVE VERNON HILLS IL 60061 8474656000 200 N MILWAUKEE AVE VERNON HILLS IL 60061 CDW COMPUTER CENTERS INC 19930322 10-Q 1 c07534e10vq.htm QUARTERLY REPORT EX-10.1 2 c07534exv10w1.htm REVOLVING NOTE EX-31.1 3 c07534exv31w1.htm CERTIFICATION OF CHIEF EXECUTIVE OFFICER EX-31.2 4 c07534exv31w2.htm CERTIFICATION OF CHIEF FINANCIAL OFFICER EX-32.1 5 c07534exv32w1.htm 1350 CERTIFICATION OF CHIEF EXECUTIVE OFFICER EX-32.2 6 c07534exv32w2.htm 1350 CERTIFICATION OF CHIEF FINANCIAL OFFICER