Try Naked Alarm Clock (Naked Alarm Clock - Free Web-based Flash Alarm Clock for Everyone) and get your computer in your room and turn the volume WAY up. Make sure that you have a screen auto-turn-off for a laptop. Select the Bugle Reville alarm, it's some sort of army music so it is not monotonous and it will NEVER stop. Therefore you just can't sleep through it...if you do, all your neighbors will come because it is SOOOOOOO loud!