Please direct your media and public relations inquiries to: mediarelations@cdw.com 800-800-4CDW CDW Computer Centers, Inc. Declares 2-for-1 Common Stock Split VERNON HILLS, Ill. -- CDW Computer Centers, Inc. (Nasdaq: CDWC) announced that the CDW Board of Directors has declared a 2-for-1 stock split of its common stock, to be effected in the form of a common stock dividend payable on June 21, 2000, to shareholders of record at the close of business on June 14, 2000. One additional share of CDW common stock will be distributed for each of the currently outstanding shares. The stock split will increase the number of shares currently issued and outstanding from approximately 43,612,000 shares to approximately 87,224,000 shares, and it will increase CDW's public float from approximately 22,712,000 shares to approximately 45,424,000 shares. At the Company's annual shareholder meeting, held today, CDW's shareholders approved an amendment to the Company's Articles of Incorporation to increase the number of authorized shares of common stock to 500 million. "Today's stock split reflects CDW's continuing record of superior financial results, market share gains and stock price appreciation," said Michael Krasny, Chairman and Chief Executive Officer. "Just as with our last stock split on May 19, 1999, our objective is to enhance the trading liquidity of our stock, which may allow more investors to participate in the investment opportunity that CDW offers." About CDW.com With more than 97,000 unique visitors each day on its award-winning Web site -- www.cdw.com --CDW brings online commerce to new heights with real-time pricing and availability, sophisticated search capabilities, company favorites, detailed order status, innovative promotions and weekly e-mail newsletters. More than 50,000 computer products -- with detailed specifications for more than 25,000 -- are available to search and order online, making the Company's Web site an integral component of its business. Safe Harbor The statements contained in this press release that are not historical in nature are forward-looking statements. Forward-looking statements are not guarantees since there are inherent difficulties in predicting future results, and actual results could differ materially from those expressed or implied in the forward-looking statements. For a list of major factors that could cause actual results to differ materially from those projected, refer to CDW's Form 10-K for year 1999 and Form 10-Q for the quarter ended March 21, 2000 filed with the Securities and Exchange Commission. Contact CDW Investor Relations via the Internet at shserv@cdw.com, or by telephone at 847-419-8234 to request additional information.