Behind Dennis J. Kuester's desk at Marshall & Ilsley Corp. hangs a framed motivational poster with the words "Do It Now" printed in bold beneath a photo of an ocean wave.

The sentiment seems to fit Mr. Kuester, who is chairman and chief executive of M&I Data Services Inc., the Milwaukee bank's outsourcing and software arm. He's a no-nonsense guy at a no-nonsense company.

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