I saw a movie of vampires and warewolfs.it was in three parts.a hero is selected for combination of vampires+warewolfs.most of the plot revolves round the heroine.she is a vampire.i forgot the name of the movie.can you help me?

Sounds like Underworld: IMDb Search (http://www.imdb.com/find?q=underworld&sourceid=mozilla-search)

Thanks buddy.it seems as if your waiting just for my question... lol

Perhaps " UNDERWORLD"?