James Coco To Star In 'Noon' Film S 1970 New York Tlm Ntwi Strvlct NEW YORK - Terrence McNally, author of the long-running off-Broadway comedy, "Next," is set to make his screemvriting debut and he's going a bit off Hollywood to do it. The name of the film is "Noon," and it will be based on his contribution to the 1968 off-Broadway triple bill, "Morning, Noon and Night." But the really red hot news is that for his leading man McNally has already signed James Coco, that red hot star of Neil Simon's "Last of the Red Hot Lovers." Coco, who got his big break in the original production of "Next," will play a kooky homosexual who answers a newspaper ad promising sexual diversions in a Manhattan loft. "Noon," which is scheduled to begin filming here this summer, will be co-produced by McNally and Robert Drivas. Drivas is the young actor who appeared on stage in McNally's "and Things That Go Bump in the Night" and "Sweet Eros." It is quite possible that he will also draw one of the five key roles in "Noon."