EARLY MORNING HELP !!?

Im in 10th grade ( im a sophmore or whatever ) and i need help waking up earlier in the morning !! I start school aat 8:45 but i alway get there early so i can go talk to friends and stuff. So i usually get there around 8:15 cause i like getting to school early. I want to get up at 7 ish but i simply cannot !! I set my alarm and i just go to bed. but the thing is that i used my blackberry alarm cause i didnt have an alarm clock because it broke. But for christmas my parents got me an alarm clock. I hate the sound of beeping alarm clocks so i got the ipod dock type alarm clock. I have heard that if i set my alarm clock 15mins before i need to get up with my fave music that it would help. Anny ideas? Im not a morning person, i could sleep in till 4 everyday if i could !! I go to bed at 11 but i have so mnuch trouble falling asleep. HELP PELASEEEEEEE