0000899171-03-000018 4 1 20030203 20030205 HARCZAK HARRY J JR 0001215333 OFFICER 4 436 FARRINGTON DR LINCOLNSHIRE IL 60069 8474656000 CDW COMPUTER CENTERS INC 0000899171 5961 363310735 IL 1231 4 34 000-21796 03539454 200 N MILWAUKEE AVE VERNON HILLS IL 60061 8474656000 200 N MILWAUKEE AVE VERNON HILLS IL 60061 4 1 form_4hh020403.htm HARRY HARCZAK STOCK OPTION GRANT