Media Inquiries Barbara Crystal CDW Corporation 847.968.0710 bcrystal@cdw.com Karen Conway Director, Industry Communications 720.887.7215 303.564.2147 (cell) kconway@ghx.com CDW Joins Global Healthcare Exchange VERNON HILLS, Ill. - February 28, 2006 - CDW Healthcare, part of CDW Corporation (NASDAQ: CDWC)'s government subsidiary and a leading provider of technology products and services to healthcare organizations, today announced that it has joined Global Healthcare Exchange, LLC (GHX), which offers an electronic trading exchange and complementary services to improve supply chain efficiencies. The agreement with GHX will expand CDW's ability to rapidly and cost-effectively deliver market-specific technology solutions that help Healthcare organizations overcome pressing business and care delivery challenges. CDW will integrate into GHX's trading exchange, enabling it to connect to, and conduct business electronically with, more than 2,300 hospitals and other Healthcare providers. Its customers can streamline internal procurement and transaction processes, driving greater efficiency by increasing the percentage of their overall purchasing conducted electronically by using the exchange. "CDW continues to expand its commitment to and offerings for the Healthcare market. Our membership in GHX is an important extension of this initiative," said Chris Rother, vice president responsible for Healthcare. "CDW's participation in GHX advances our mission of leveraging world-class IT products and services to help Healthcare organizations meet their unique patient and technology requirements. It also helps our customers exert further control over their supply chain operations." By connecting with customers electronically, CDW will extend efficiencies in the ordering process and support its commitment to rapid delivery of technology solutions. Customers participating in GHX will have the opportunity to buy products from CDW through a single, existing Internet connection to GHX. "GHX welcomes CDW to its growing roster of participating suppliers," said Stacey Breeden, Director of Supplier Membership for GHX. "CDW's relationship with more than 1,000 leading technology manufacturers will greatly advance the ability of our provider members to increase the types of products they can purchase electronically and therefore more efficiently." About CDW-G CDW Government, Inc. (CDW-G), a wholly owned subsidiary of CDW Corporation (NASDAQ: CDWC), a FORTUNE 500 company, is a trusted technology advisor and solutions provider to federal, state and local government agencies, as well as to educational institutions at all levels. CDW-G responds with a sense of urgency to customer technology needs, delivering best-in-class solutions from top-name brands such as APC, Apple, Cisco, HP, IBM, Microsoft, Sony, Symantec, Toshiba and ViewSonic. CDW-G focuses on building strong customer relationships with its knowledgeable account managers and technical specialists who provide extensive pre- and post-sales support. For more information about CDW-G product offerings, procurement options, services and solutions, call 1.800.863.4239, or visit the CDW-G Web site at CDWG.com. About Global Healthcare Exchange Global Healthcare Exchange, LLC (GHX) provides an open and neutral electronic trading exchange, along with complementary products and services, through which buyers and sellers can collaborate to improve efficiencies in the healthcare supply chain. GHX's catalog and content services improve the accuracy of purchasing transactions, reducing many of the most common and costly problems in healthcare procurement, while the privately held company's revenue neutral business model is designed to lower costs for all involved. GHX's owners, strategic partners, and trading exchange participants are representative of the entire healthcare supply chain, including manufacturers and distributors, integrated delivery networks (IDNs), hospitals and ancillary healthcare facilities, group purchasing organizations and their proprietary healthcare trading exchanges, and supply chain technology companies. Equity owners of GHX include Johnson & Johnson Health Care Systems Inc.; GE Medical Systems; Baxter Healthcare Corp.; Medtronic USA, Inc.; Abbott Exchange, Inc.; Siemens; Becton, Dickinson & Co.; Boston Scientific Corp.; Tyco Healthcare Group, LP; Guidant Corp.; C.R. Bard, Inc.; AmerisourceBergen Corp.; Cardinal Health, Inc.; Fisher Scientific International, Inc.; McKesson Corp.; B Braun Medical Inc.; Premier, Inc. and HCA. For more information visit www.ghx.com.