CDW's Average Daily Sales Increase 14.2 Percent in February 2007.

VERNON HILLS, Ill. -- CDW Corporation (NASDAQ:CDWC), a leading provider of technology products and services to business, government and education, today announced average daily sales for February 2007 were $28.018 million, an increase of 14.2 percent compared to average daily sales of $24.533 million for February 2006. Total sales for February 2007 were $560.4 million, an increase of 14.2 percent compared to total sales of $490.7 million for February 2006. There were 20 billing days in both February 2007 and February 2006.

As previously announced, CDW completed the acquisition of Berbee Information Networks Corporation on October 11, 2006. February 2006 sales do not include Berbee sales, while February 2007 sales include Berbee sales. Excluding Berbee sales in February 2007, and therefore on a non-GAAP basis, CDW's average daily sales for February 2007 were $26.080 million compared to average daily sales for February 2006 of $24.533 million and total sales for February 2007 were $521.6 million compared to total sales of $490.7 million for February 2006, both representing an increase of 6.3 percent.

In February 2007 average daily sales for the public sector segment increased 16.8 percent and average daily sales for the corporate sector segment increased 2.5 percent compared to the prior year period. While CDW did not own Berbee prior to October 11, 2006, the Company is providing comparative information for Berbee. Compared to the prior year periods, average daily sales for Berbee increased 26.2 percent in January 2007 and 61.8 percent in February 2007. Compared to the public sector and corporate sector segments, Berbee's business model is more project oriented, which can result in a greater degree of variability in sales on a monthly basis.

Product categories that achieved the strongest year-over-year unit volume growth for the month on an average daily basis included notebook computers, data storage, video and input devices. Product categories exclude Berbee sales. Compared to the prior year period, a greater amount of revenue related to the sales of software-related products was recognized on a net basis compared to a gross basis.

"We are pleased with our total sales growth in February 2007 and remain confident of our ability to continue to grow profitably," said John A. Edwardson, chairman and chief executive officer.

The Company plans to announce March 2007 sales on Thursday, April 12, 2007 and first quarter earnings on Tuesday, April 24, 2007. March 2006 had 23 billing days and March 2007 will have 22 billing days.

Forward Looking Statement

Any forward-looking statements contained in this release are based on the Company's beliefs and expectations as of the date of this release and are subject to certain risks and uncertainties which may have a significant impact on the Company's business, operating results or financial condition. Should any risk or uncertainty materialize, or should underlying assumptions prove incorrect, actual results or outcomes may vary materially from those described in forward-looking statements. Factors affecting the Company's business and prospects are discussed in the Company's filings with the Securities and Exchange Commission.

About CDW

CDW[R], ranked No. 343 on the FORTUNE 500, is a leading provider of technology solutions for business, government and education. CDW is a principal source of technology products and services including top name brands such as Acer, Adobe, APC, Apple, Cisco, Fujitsu, HP, IBM, Lenovo, Microsoft, Panasonic, Quantum, Samsung, Sony, Symantec and ViewSonic. CDW's direct model offers customers one-on-one relationships with knowledgeable account managers and access to more than 760 on-staff engineers and advanced technology specialists who customize solutions for customers' complex technology needs. CDW also provides same-day product shipping and post-sales technical support.

CDW was founded in 1984 and employs approximately 5,480 coworkers. In 2006, the company generated sales of $6.8 billion. For more information, visit 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 [e-mail] or by telephone at 847-419-6328.

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