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CDW Healthcare Awarded for Excellence by VHA Inc. for Second Consecutive Year

VHA Recognizes CDW Healthcare for Outstanding Service and Client Satisfaction

VERNON HILLS, Ill. - June 14, 2007 - CDW Healthcare, part of the public sector subsidiary of CDW Corporation (NASDAQ:CDWC), and a leading provider of technology products and services to healthcare organizations, today announced it had been selected as the winner of two awards from VHA, Inc., a healthcare provider alliance of more than 2,400 not-for-profit health care organizations. VHA members recently selected CDW Healthcare as Supplier of Excellence for Member Satisfaction, as well as Supplier of the Year for Services.

VHA Award for Supplier of Excellence for Member Satisfaction
The VHA Supplier of Excellence for Member Satisfaction recognizes vendors for their quality and excellence in providing services and solutions to VHA members. Winners are chosen based on the composite results of two surveys of VHA member organizations conducted in 2005 and 2006.

CDW Healthcare earned a composite score of 88 out of 140, the highest of any vendor serving VHA members. CDW Healthcare was also the recipient of the highest number of "perfect 10" scores in the member satisfaction category.

"CDW Healthcare scored exceptionally well," said Amy Anthony, vice president of supplier services with VHA. "They have set the benchmark for member satisfaction."

Supplier of the Year for Services
CDW Healthcare was also named one of four Suppliers of the Year for Services by VHA. The Supplier of the Year award is given to vendors for outstanding service to acute-care providers. Winners of the award were recognized at the 2007 VHA Leadership Conference, held in Denver on May 20.

In 2006, CDW Healthcare received awards from VHA for sales growth and excellence in service.

"CDW is deeply honored to be recognized once again by VHA members, and we are proud of our continued partnership with VHA," said Bob Rossi, Senior Director of CDW Healthcare. "These awards reflect how the depth of our offerings and the expertise of our technology specialists combine to provide our customers with customized solutions and unmatched service."

About CDW Healthcare
CDW Healthcare, part of the public sector subsidiary of CDW Corporation (NASDAQ:CDWC), is a leading provider of technology products and services focused exclusively on healthcare organizations. Working in partnership with customers ranging from small rural providers to large and complex integrated delivery networks, CDW Healthcare responds with a sense of urgency to customer technology needs, delivering best-in-class solutions from top-name brands such as IBM, HP, Cisco, Microsoft, Planar, EMC, Fujitsu, Symantec, Motion, Lenovo, Xerox, Lexmark and Symbol. CDW Healthcare account management teams build strong customer relationships by responding to customer IT infrastructure requirements with in-depth advice, technical expertise and the best technology that the industry has to offer.

For more information about CDW Healthcare offerings, procurement options, services and solutions, call 1.800.410.4239, or visit the CDW Healthcare Web site at http://www.cdw.com/healthcare.

CDW Corporation will file with the Securities and Exchange Commission (the "SEC"), and furnish to its shareholders, a proxy statement soliciting proxies for the meeting of its shareholders to be called with respect to the proposed merger between CDW and Madison Dearborn Partners, LLC. CDW SHAREHOLDERS ARE ADVISED TO READ THE PROXY STATEMENT WHEN IT IS FINALIZED AND DISTRIBUTED TO THEM BECAUSE IT WILL CONTAIN IMPORTANT INFORMATION. CDW shareholders and other interested parties will be able to obtain, without charge, a copy of the proxy statement (when available) and other relevant documents filed with the SEC from the SEC's website at http://www.sec.gov. CDW shareholders and other interested parties will also be able to obtain, without charge, a copy of the proxy statement (when available) and other relevant documents by directing a request by mail or telephone to CDW Corporation, 200 N. Milwaukee Ave., Vernon Hills, Illinois 60061, Attention: Corporate Secretary, telephone: (847) 465-6000, or from CDW's website, http://www.cdw.com.

CDW and certain of its directors, executive officers and other members of management and employees may, under SEC rules, be deemed to be "participants" in the solicitation of proxies from shareholders of CDW with respect to the proposed merger. Information regarding the persons who may be considered "participants" in the solicitation of proxies will be set forth in CDW's proxy statement relating to the proposed merger when it is filed with the SEC. Information regarding certain of these persons and their beneficial ownership of CDW common stock as of March 31, 2007 is also set forth in CDW's proxy statement for its 2007 Annual Meeting of Shareholders, which was filed with the SEC on April 16, 2007.

Statements about the expected timing, completion and effects of the proposed merger between CDW and Madison Dearborn Partners, LLC, and all other statements in this filing other than historical facts, constitute forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Readers are cautioned not to place undue reliance on these forward-looking statements, each of which is qualified in its entirety by reference to the following cautionary statements. Forward-looking statements speak only as of the date hereof and are based on current expectations and involve a number of assumptions, risks and uncertainties that could cause actual results to differ materially from those projected in the forward-looking statements. CDW may not be able to complete the proposed merger because of a number of factors, including, among other things, the failure to obtain shareholder approval, the failure of financing or the failure to satisfy other closing conditions. Other risks and uncertainties that may affect forward-looking statements are described in the reports filed by CDW with the SEC under the Securities Exchange Act of 1934, as amended, including without limitation CDW's Annual Report on Form 10-K for the year ended December 31, 2006.