Fly to Vegas, find LAM and slap him in the face and call him a Pu$$y. Trust me, you'll soon learn to run very very fast.
It's amazing what you're capable of when your life depends on it.
Seriously though, if you have access to a programable treadmill you might consider setting it up to cycle through a jog/sprint exercise. I usually set mine up to Sprint for 2 minutes and jog for 5 (you can set your actual speeds to fit your ability). I'll run this cycle for 35 minutes (5 cycles) and then do a 20 minute cool-down.
I'm not really a sprinter by nature, I just do this to improve my 2-mile run time for the army and also for the intense calorie burn.
Oh..... I almost forgot. Stretching is a must. Groin Stretch, Calve Stretch, Hurdle Stretch, etc. Failure to properly stretch can be catastrophic when pushing yourself in sprints.