0000950137-05-003053 10-K 9 20041231 20050316 20050315 CDW CORP 0000899171 5961 363310735 IL 1231 10-K 34 000-21796 05682908 200 N MILWAUKEE AVE VERNON HILLS IL 60061 8474656000 200 N MILWAUKEE AVE VERNON HILLS IL 60061 CDW COMPUTER CENTERS INC 19930322 10-K 1 c93064e10vk.htm FORM 10-K EX-10.(AA) 2 c93064exv10wxaay.htm INDUSTRIAL LEASE EX-10.(BB) 3 c93064exv10wxbby.htm GUARANTY AGREEMENT EX-21 4 c93064exv21.htm SUBSIDIARIES EX-23 5 c93064exv23.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM EX-31.1 6 c93064exv31w1.htm CERTIFICATION OF CEO PURSUANT TO RULE 13A-14(A) EX-31.2 7 c93064exv31w2.htm CERTIFICATION OF CFO PURSUANT TO RULE 13A-14(A) EX-32.1 8 c93064exv32w1.htm CERTIFICATION OF CEO PURSUANT TO 18 U.S.C. 1350 EX-32.2 9 c93064exv32w2.htm CERTIFICATION OF CFO PURSUANT TO 18 U.S.C. 1350