How do I replace the alternator belt?

So my alternator belt snaped off and I got a new one to replace it, I figured "hey an easy fix right?" boy was I wrong, as soon as I poped the hood I knew I was in trouble, I can't figure out how to get the damned thing around the pulley, not without removing the drive belt thats in it's way, and I can't even figure out how to do that, not without cutting through the damned thing, please help, I'm confused.

Stop and think, please post year, make and engine!!

Oh, sorry, this has really got me upset, I can't get it to a mechanic and even if I could I have no more $ to spend on it.
Anyway, it's a 1989 Pontiac Grand Am with a 2.5, 4 cy engine, and the alternator belt is just a normal V-belt.

Here are general instructions, you have to look at the adjustment methods for each belt to determine how to remove them. http://autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/0e/61/0f/0900823d800e610f.jsp

Wow, that really helped a lot, the diagram was just what I needed thanks a lot.