0000950137-06-011325 8-K 3 20061019 5.03 9.01 20061024 20061024 CDW CORP 0000899171 5961 363310735 IL 1231 8-K 34 000-21796 061160558 200 N MILWAUKEE AVE VERNON HILLS IL 60061 8474656000 200 N MILWAUKEE AVE VERNON HILLS IL 60061 CDW COMPUTER CENTERS INC 19930322 8-K 1 c09323e8vk.htm CURRENT REPORT EX-3.1 2 c09323exv3w1.htm AMENDED AND RESTATED BYLAWS EX-3.2 3 c09323exv3w2.htm AMENDED AND RESTATED BYLAWS