0000950137-06-006052 S-8 3 20060517 20060517 20060517 CDW CORP 0000899171 5961 363310735 IL 1231 S-8 33 333-134204 06848834 200 N MILWAUKEE AVE VERNON HILLS IL 60061 8474656000 200 N MILWAUKEE AVE VERNON HILLS IL 60061 CDW COMPUTER CENTERS INC 19930322 S-8 1 c05485sv8.htm REGISTRATION STATEMENT EX-5 2 c05485exv5.htm OPINION OF SIDLEY AUSTIN LLP EX-23.1 3 c05485exv23w1.htm CONSENT OF PRICEWATERHOUSECOOPERS LLP