Bill Wright, a spokesman for E.D.S., said the computer-services company had been informed by Mr. Hudson's office that it "is not a target of the grand jury investigation."

Impressed with his military background, Ross Perot, the founder of the Electronic Data Systems Corporation, the computer-services company in Dallas, hired Mr. Yurcak in 1971 as a systems engineer.

And while IBM is undoubtedly now more of a computer-services company, much of this business is a spin-off from its installed base of mainframes - hardly a growing market.

Hewlett-Packard, a company based in Palo Alto, Calif., that makes computer systems, will contribute hardware and Electronic Data, a Dallas-based computer-services company, will provide software.

There were 25 small graphics and computer-services companies in his building; now there are 8.

After starting his own computer-services company and running it for seven years, he returned to the union, running a training center in West Virginia that taught courses on construction and safety.

Mr. Perot became G.M.'s largest shareholder and a member of the board in 1984, when the company bought E.D.S., his computer-services company.

Electronic Data Systems recently purchased 20 percent of Japan System K.K., a computer-services company that desperately needed capital after its orders collapsed.

With $12.7 billion in sales last year, the services division is now second only to hardware as I.B.M.'s largest source of revenue and makes I.B.M. the biggest computer-services company in the world.

Mr. Nadler, 33, is a founder and the chief executive of I-Mode Publications and I-Mode Retrieval Systems, computer-services companies in Yonkers.