Please direct your media and public relations inquiries to: mediarelations@cdw.com 800-800-4CDW 12.22.05 CDW Promotes Cindy Thorson Klimstra to Vice President Investor Relations 12.20.05 CDW "Small Business Reboot" Challenges Corporate Sector to Help Rebuild Gulf Coast Small Businesses 12.15.05 MEDIA ALERT: CDW and LABI to Make Announcement Concerning Gulf Coast Small Businesses 12.13.05 CDW Debuts Ready-to-Run Services for Oracle Database Solutions 12.09.05 CDW's Sales Increase 9.9 Percent in November 2005 11.10.05 CDW Corporation to Present at Raymond James IT Supply Chain Conference 11.08.05 CDW's Sales Increase 8.0 Percent in October 2005 10.27.05 CDW to Webcast 2005 Analyst Day Investor Event 10.18.05 CDW Outpaces Market Growth to Achieve Record Quarterly Sales, Net Income and Earnings per Share 10.11.05 CDW to Release Third Quarter Results on October 18, 2005 09.26.05 Marketing Agency, Computer Technicians, Hardware Providers Band Together to Help Gulf Communities Rebuild Government Infrastructure 09.15.05 CDW Corporation to Present at Bank of America Investment Conference 09.13.05 CDW’s Sales Increase 13.8 Percent in August 2005 09.12.05 CDW Works with Community to Fill Trucks with Food for Hurricane Relief 09.06.05 Dennis G. Berger Joins CDW as Vice President, Coworker Services 08.30.05 CDW Debuts Suite of ROI Toolkits to Help Customers Build Business Cases for IT Investments 08.09.05 CDW’s Average Daily Sales Increase 10.1 Percent in July 2005 07.19.05 CDW Reports Second Quarter Results 07.19.05 CDW Sharpens Vertical Sales and Marketing Focus with the Creation of a Dedicated Healthcare Team 07.12.05 CDW Looks Ahead to Edmonton with Toronto Checkered Flag in Hand 07.12.05 CDW to Release Second Quarter Results on July 19, 2005 07.07.05 Thomas J. Hansen Elected to CDW Board of Directors 07.07.05 CDW Revs Up Its First-Ever Race Car Sponsorship 06.14.05 CDW Launches Biz Tech Magazine: Company Premieres New Magazine Web Site on IT Strategy for Small Business 06.09.05 CDW’s Average Daily Sales Increase 8.1 Percent in May 2005 06.01.05 CDW Corporation to Present at June Investor Conferences 05.11.05 CDW Corporation Announces 19 Percent Increase in Annual Dividend 05.10.05 CDW's Average Sales Increase 10.2 Percent in April 2005 05.03.05 CDW to Host Annual Meeting of Shareholders 04.29.05 CDW Announces Increase in Share Repurchase Program 04.12.05 CDW to Release First Quarter Results on April 19, 2005 04.05.05 CDW Climbs 29 Places on FORTUNE 500 List, Ranks in Top Ten Percent in Key Categories 03.24.05 CDW Coworkers to Join Habitat for Humanity in Thailand for Tsunami Relief Project 03.07.05 CDW's Average Daily Sales Increase 10.2 Percent in February 2005 03.03.05 CDW Says Bridgeport Holdings Claim is Without Merit 02.28.05 CDW Corporation to Present at March Investor Conferences 02.24.05 CDW Again Claims Top Industry Ranking on FORTUNE’s “Most Admired” List 02.23.05 CDW Announces New Distribution Center to Expand Capacity 02.16.05 CDW Launches New "Power of Confidence" Brand Campaign 02.14.05 CDW Corporation to Present at February Investor Conferences 02.10.05 CDW's Average Daily Sales Increase 10.9 Percent in January 2005 01.25.05 CDW Achieves Record Fourth Quarter and Full Year Results 01.24.05 CDW Promotes Anne B. Ireland to Vice President Business Development 01.18.05 CDW To Release Fourth Quarter Results On January 25, 2005 01.13.05 CDW Named Among Best Places to Work by Fortune Magazine For Seventh Straight Year