So, starting tomorrow night in Yale's Payne Whitney Gymnasium, a gargoyled Gothic cathedral that looks like Notre Dame, he joins Yale's actors, musicians, singers and swimmers in the hallowed 2,200-seat temple of prowess past, where Yalies once trained for the Olympics. "It's the nearest thing we have in America to a Greek amphitheater," says Shevelove, who's pulled together a de-Millian company of 86, a few of them "townies" and high school students. "We're trying to recreate the experience of seeing a comedy by Aristophanes -- as it might have been staged. This is not an aquacade for the fans of Esther Williams."