Instead of relying on such films as West Side Story, Breakfast at Tiffany's" or Woody Allen's Manhattan, this group's idea of New York mostly comes from such sources as Law & Order, Sex and the City, Rent and the New York street on the Universal Studios tour.One Tujunga girl is startled to see so many Amish here. (No, she is told, they are Hasidic Jews.) Another arrives fairly sure tha