 LINCOLNSHIRE, Ill.--BUSINESS WIRE--CDW Corporation Nasdaq: CDW, today announced that Al Miralles will join CDW as senior vice president and chief financial officer, effective September 7. He will succeed Collin B. Kebo, who previously announced his intention to retire after 13 years with CDW. Miralles will report to Christine A. Leahy, president and chief executive officer. Al brings 30 years of financial and operating experience to CDW and a proven track record of successful leadership in 