Please direct your media and public relations inquiries to: mediarelations@cdw.com 800-800-4CDW CDW Corporation's CEO to Present at Raymond James and Associates IT Supply Chain Conference VERNON HILLS, Ill. - December 9, 2003 - CDW Corporation's chairman and chief executive officer, John Edwardson, is scheduled to present to investors at the Raymond James and Associates IT Supply Chain Conference in New York on Thursday, December 11. Edwardson's presentation can be accessed via live Webcast at www.cdw.com/investor. The live Webcast will begin at 2:00 p.m. EST and will replay for approximately 30 days. Breakout sessions will not be Webcast. About CDW CDW® (Nasdaq: CDWC), ranked No. 381 on the FORTUNE 500, is a leading provider of technology solutions for businesses, government agencies and educational institutions nationwide. CDW is a principal source of technology including top name brands such as APC, Apple, Cisco, HP, IBM, Microsoft, Sony, Symantec, Toshiba and ViewSonic. CDW distributes contracts to end users for customized and standardized on-site services supplied directly by providers such as HP Services and Unisys and for training programs provided by firms such as KnowledgeNet and Productivity Point International. CDW was founded in 1984 as a home-based business and today employs over 3,600 coworkers whose efforts generated net sales of more than $4.2 billion in 2002. 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 or 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 more than 100 factory-trained and A+ certified technicians on staff. Additional information can be found by visiting CDW.com.