<SUBMISSION>
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<PERIOD>20031023
<FILING-DATE>20031024
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>FRIEDSON ARTHUR S
<CIK>0001215330
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<FILING-VALUES>
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<ACT>34
<FILE-NUMBER>000-21796
<FILM-NUMBER>03955387
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<BUSINESS-ADDRESS>
<STREET1>1630 CHICAGO AVE
<STREET2>APT 1408
<CITY>EVANSTON
<STATE>IL
<ZIP>60201
<PHONE>8974656000
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<CONFORMED-NAME>CDW CORP
<CIK>0000899171
<ASSIGNED-SIC>5961
<IRS-NUMBER>363310735
<STATE-OF-INCORPORATION>IL
<FISCAL-YEAR-END>1231
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<BUSINESS-ADDRESS>
<STREET1>200 N MILWAUKEE AVE
<CITY>VERNON HILLS
<STATE>IL
<ZIP>60061
<PHONE>8474656000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
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<CITY>VERNON HILLS
<STATE>IL
<ZIP>60061
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<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>CDW COMPUTER CENTERS INC
<DATE-CHANGED>19930322
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