CDW Achieves Record Full Year and Fourth Quarter Sales.

VERNON HILLS, Ill. -- CDW Corporation:

* Full year 2007 sales: $8.145 billion, up 20.0% year-over-year

* Fourth quarter 2007 sales: $2.134 billion, up 17.0% year-over-year

CDW Corporation, a leading provider of technology products and services to business, government and education, today announced record quarterly sales in the fourth quarter of 2007 and record annual sales for 2007.

"These sales results reflect the exceptional work of our coworkers during a year of transition for CDW," said John A. Edwardson, chairman and chief executive officer, CDW Corporation. "While CDW was being acquired in a go-private transaction with affiliates of Madison Dearborn Partners and Providence Equity Partners, our coworkers continued to prove they are the best team in the industry by staying focused, gaining market share and providing the best customer service in the industry. We are well-positioned to make the investments necessary to continue growing the company and bringing CDW's mix of products and technology services to current and new customers."

Fourth Quarter of 2007

Total sales in the fourth quarter of 2007 were $2.134 billion, compared to $1.824 billion in the fourth quarter of 2006, an increase of 17.0 percent. Average daily sales in the fourth quarter of 2007 were $33.866 million, compared to $28.951 million in the fourth quarter of 2006, representing a 17.0 percent increase. There were 63 billing days in both the fourth quarter of 2007 and the fourth quarter of 2006.

Total sales in October 2007 were $764.1 million, compared to $635.1 million in October 2006, representing a 20.3 percent increase. Average daily sales in October 2007 were $33.220 million, compared to $28.867 million in the prior year period, representing a 15.1 percent increase. October 2007 had 23 billing days, and October 2006 had 22 billing days.

Total sales in November 2007 were $647.4 million, compared to $569.2 million in November 2006, representing a 13.7 percent increase. Average daily sales in November 2007 were $30.826 million, compared to $27.105 million in the prior year period, representing a 13.7 percent increase. November 2007 had 21 billing days, and November 2006 had 21 billing days.

Total sales in December 2007 were $722.1 million, compared to $619.6 million in December 2006, representing a 16.5 percent increase. Average daily sales in December 2007 were $38.008 million, compared to $30.982 million in the prior year period, representing a 22.7 percent increase. December 2007 had 19 billing days, and December 2006 had 20 billing days.

Full Year 2007

Total sales for 2007 were $8.145 billion, compared to $6.785 billion in 2006, an increase of 20.0 percent. Average daily sales for 2007 were $32.065 million, compared to $26.714 million in 2006, representing a 20.0 percent increase. There were 254 billing days in both 2007 and 2006.

Acquisition of Berbee Information Networks Corporation

As previously announced, CDW completed the acquisition of Berbee Information Networks Corporation on October 11, 2006. October 2006 sales, fourth quarter 2006 sales, and full-year 2006 sales figures do not include Berbee sales prior to October 11, 2006.

About CDW

CDW([R]), ranked No. 342 on the 2007 FORTUNE 500 and No. 39 on Forbes magazine's list of America's Largest Private Companies, 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, EMC, Fujitsu, HP, IBM, Lenovo, Microsoft, Panasonic, Quantum, Samsung, Sony, Symantec, ViewSonic and Xerox.

CDW was founded in 1984 and as of December 31, 2007 employed approximately 6,300 coworkers. In 2007, the company generated sales of $8.145 billion. For more information, visit CDW.com.

Forward-Looking Statements 

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.