Write back a message in a few months and tell me how your doing, i might have a few workout book s for you, you can do it, believe that you're gona get up to 130 by january 2009.
One last thing, run sprints outside with your shirt off when the sun is out, for the vitamin d and the anabolic effect it has on your body, great sprinters are also some of the most muscular people in the world. Don't worry about what people would think all that matters is your goals.