Media Inquiries Gary Ross Sr. Manager, Corporate Communications 847-371-5048 garyross@cdw.com Investor Contact Cindy Klimstra Director, Investor Relations 847-968-0268 cklimstra@cdw.com Dennis G. Berger Joins CDW as Vice President, Coworker Services VERNON HILLS, Ill. - September 6, 2005 - CDW Corporation (NASDAQ: CDWC), a leading provider of technology products and services to business, government, and education, today announced Dennis G. Berger is joining the company as vice president, coworker services, effective today. In this role, Berger will be leading CDW's programs in coworker learning and development, benefits, compensation, performance management, coworker relations, and recruitment. He will also be a member of the Executive Committee, which sets the strategic direction of the company. "I am confident that Dennis can build on the unique coworker-centric culture that has helped make CDW so successful," said John A. Edwardson, chairman and chief executive officer, CDW. "He is skilled in developing the means to engage and motivate a workforce at all levels." Berger most recently served as vice president, human resources, for Minneapolis-based PepsiAmericas, Inc., the world's No. 2 Pepsi bottler, in their Rolling Meadows, Ill. office. He was the senior field human resources executive for this $3 billion business with 11,000 employees across 19 U.S. states. During his tenure there, he assisted in the development of several incentive programs, re-dedicated the company to workplace safety, and helped enhance the corporate culture. Prior to this role, Berger served as a group vice president of human resources in PepsiAmericas' St. Louis office. Before joining PepsiAmericas in 1999, he held human resources positions of increasing responsibility at Pepsi Bottling Group, Inc., Pepsico, Inc., GTE Corporation, and other firms. Berger holds a master of business administration degree from the John M. Olin School of Business at Washington University in St. Louis and bachelor of business administration degree from Northeastern University in Boston. In connection with his hiring, Berger will receive 8,400 restricted shares of CDW common stock to compensate for forgoing restricted stock at his current employer. The restricted shares will vest in equal installments on each of the first three anniversaries of Berger's hire date, which is today, September 6, 2005. About CDW CDW® (NASDAQ: CDWC), ranked No. 347 on the FORTUNE 500, is a leading provider of technology products and services for business, government and education. CDW is a principal source of technology from top name brands such as Adobe, APC, Apple, Cisco, HP, IBM, Microsoft, Sony, Symantec, Toshiba and ViewSonic. CDW was founded in 1984 and today employs approximately 4,000 coworkers. In 2004, the company generated sales of $5.7 billion. CDW's direct model offers one-on-one relationships with knowledgeable account managers; purchasing by telephone, fax, the company's award-winning CDW.com web site, customized CDW@work™ extranets, CDWG.com web site and macwarehouse.com web site; custom configured solutions and same day shipping; and pre- and post-sales technical support, with approximately 120 factory-trained and A+ certified technicians on staff. Additional information can be found by visiting CDW.com.