Ray Ozzie has a long and storied history of technological innovation, with accomplishments that include creating Lotus Notes and founding Groove Networks. But Ozzie may now be facing the most daunting challenge of his career: coordinating the work of Microsoft’s various product groups to keep the world’s largest software company agile enough to address the challenge of the next generation of Internet-enabled software. It would have been difficult to predict the events that led Ozzie to this point. Growing up in and around Chicago, the middle of three children, Ozzie liked to build things, and was more interested in constructing model train layouts and assembling cool electronic contraptions than he was in schoolwork. He was, of course, a member of the audio-visual squad in his Park Ridge, Ill., high school. It was during his freshman year there that Ozzie stumbled upon his first computer — an encounter that would set him on the path to his future career.…