Please direct your media and public relations inquiries to: mediarelations@cdw.com 800-800-4CDW CDW Names Jon Stevens Vice President of Information Technology VERNON HILLS, Ill. June 27, 2001 - CDW Computer Centers Inc. (Nasdaq: CDWC) today announced Jon Stevens joined the company on June 25. Expanding the company's management team as vice president of information technology, Stevens is responsible for leading the activities of the information technology department, including CDW's development and e-commerce departments. He will also assist in building an infrastructure to accommodate the company's growth. "Jon is a great addition to our team and we expect that he will make valuable contributions at CDW with his leadership skills, business acumen and experience with many facets of technology," said Jim Shanks, executive vice president and CIO. "We must continuously develop our technology applications and infrastructure to enhance customer service, improve efficiency and meet the demands created by our growth. Jon is the right person to lead the efforts that will take our systems to the next level." Prior to joining CDW, Stevens served as regional technology director for Avanade, a new technology integration company formed through an alliance between Microsoft and Accenture. Stevens was tapped by Microsoft senior management to run the Core Infrastructure and Pervasive Computing division for the central region, and he assisted in the development of other Avanade divisions around the globe. Previously, Stevens was a principal with Microsoft Consulting Services, where he worked with Microsoft's largest customers on their technology and business strategy. Stevens holds a bachelor's degree of science in computer information systems management from University of Dayton. About CDW Computer Centers, Inc. CDW® (Nasdaq: CDWC - news), ranked No. 435 on the FORTUNE 500, offers complete, customized technology solutions for businesses, government agencies and educational institutions nationwide. CDW is a leading source of technology products and services from companies such as Cisco, Compaq, Hewlett-Packard, IBM, Intel, Microsoft, Sony, Toshiba and other top name brands. CDW was founded in 1984 as a home-based business and today employs more than 2,700 coworkers whose efforts generated net sales of $3.8 billion in 2000. CDW's direct model offers one-on-one relationships with highly trained account managers; purchasing via telephone, the award-winning www.cdw.com Web site, and customized CDW@work(TM) extranets; custom configured solutions and same day shipping; flexible financing solutions; and, telephone and online technical support with its factory-trained and A+ certified technicians. Additional information can be found by visiting http://www.cdw.com. For more information About CDW: Visit CDW on the Internet at http://www.cdw.com Contact CDW Investor Relations via the Internet at investorrelations@cdw.com Or by telephone at 847.419.8234