UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549




                                    FORM 8-K

                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


         Date of report (Date of earliest event reported): July 19, 2005
                                                           -------------


                                 CDW Corporation
                                 ---------------
             (Exact Name of Registrant as Specified in Its Charter)



            Illinois                      0-21796               36-3310735
            --------                      -------               ----------
  (State or Other Jurisdiction   (Commission File Number)      (IRS Employer
        of Incorporation)                                   Identification No.)

      200 N. Milwaukee Ave.
     Vernon Hills, Illinois                                    60061
     ----------------------                                    -----
 (Address of Principal Executive                            (Zip Code)
            Offices)



       Registrant's telephone number, including area code: (847) 465-6000
                                                           --------------



Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act (17
    CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
    CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
    Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
    Exchange Act (17 CFR 240.13e-4(c))




Item 2.02         Results of Operations and Financial Condition.

The following information is furnished pursuant to Item 2.02.

On July 19, 2005, CDW Corporation (the "Registrant") issued a press release
announcing its second quarter 2005 earnings. A copy of the press release is
included as Exhibit 99 to this Current Report on Form 8-K.


Item 9.01         Financial Statements and Exhibits.

Exhibit 99, Press Release dated July 19, 2005, announcing second quarter 2005
earnings.






                                    SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                         CDW CORPORATION


         Date: July 19, 2005             By:      /s/ Barbara A. Klein
                                         ----------------------------------
                                                  Barbara A. Klein
                                                  Senior Vice President and
                                                  Chief Financial Officer







                                  EXHIBIT INDEX

Exhibit Number    Exhibit
- --------------    -------
99                Press release dated July 19, 2005, announcing
                  second quarter 2005 earnings.