William Driscoll Hunter, 66, a founder and vice president of an Arlington microcomputer firm and a retired sales executive with the IBM Corp., died of cancer Aug. 29 at Georgetown University Hospital.

Mr. Hunter, who lived in Alexandria, was born in Newark, N.J. He attended New York and Georgetown universities. He joined IBM in New York in 1937 and was transferred to its Washington office in 1939. During World War II, he was a Navy communications officer and saw service in the Pacific.

From 1955 to 1970, he was manager of the IBM sales office in Poughkeepsie, N.Y. He retired in 1971 and moved to Princeton, N.J.

In 1974, he returned to the Washington area and founded Hunter & Associates, an executive employment agency. He helped found Micro Brokers Inc. in Arlington in 1981 and remained active in the company until his death.

Mr. Hunter was a member of the Alexandria Chamber of Commerce and Holy Trinity Catholic Church in Washington.

Survivors include his wife, Julia Gannon Hunter of Alexandria; three children, Julia Hunter Galdo of Arlington, Kathleen Hunter Baumgarten of Alexandria, and William D. Jr. of Washington; a brother, Eugene F. of Hackensack, N.J., and four grandchildren.