Dracula - Bram Stoker (Why not start with the best?)
The Vampire Chronicles - Anne Rice
Vampire Academy - Richelle Mead
(If you want more just ask, but I'm not sure what you have or haven't read)
Wolf Creek,
Five Across the Eyes...
I'm not a huge fan of modern horror I must say but each to their own. I wish you luck in finding a film that will scare you witless. :)
