At the worst possible time (I just got Fallout 3!) my processor fan crapped out on me. So, being the desperate idiot that I am, I have taken off the case and put a small desk fan right next to my comp so I can play this wonderful game.

Any who, I am looking to replace this fan but I was wondering if it is at all complicated/dangerous for my computer. I'm not that tech savvy but I don't like being charged fifty bucks for a tech guy at a store to pop out some screws. Also, if anyone want to throw out some suggestions on some reliable fans for my comp, please feel free to do so!