Stuck at bootup *NEED HELP*

Okay, here's the ordeal. I bootup my MacBook and it gets to the gray Apple with the spinning wheel of loadingness. =[ I can't get off this screen and I do not have any discs to repair, nor any money to send it in for repair. I am looking for a way to resolve this problem for free (*COUGH* TORRENT REPAIR DISC *COUGH*). If anybody has any information (or direct links to the torrent to a repair disc iso *COUGH COUGH*) I would appreciate the help greatly. Thanks, and God bless.