As Halloween costumes testify, there is a certain image we have of a vampire that comes from the Bela Lugosi Dracula tradition made classic by the 1930?s horror movie. He?s all cloak and fangs?. but there?s a bald headed, more surreal kind of vampire which is the thread of a German tradition originating in the earlier silent movie called Nosferatu. Tonight at the Walter Reade Theater at Lincoln Center, there?s the New York debut of a new score for the film . Judith Kampfner reports.