How times have changed. In the 1970s and '80s in the little village of Maynard, Mass., the towering brick mill in the heart of town bustled with activity. The headquarters of computer industry giant Digital Equipment Corp., the building was home to more than 10,000 of the company's 125,000 employees. Among them was meeting planner Ed Simeone. He focused on planning trade shows as well as marketing and advertising.