This may seem like a stupid question but how do I get the power steering pump belt off? I've got a '68 Camaro w/327.

I use a sharp pocket knife :D

Really - there are three(3) bolts holding the pump in position. Two of the bolts are adjuster bolts - one in front and one in back of the pump. (the other is a pivot bolt)
If you 'loosen' all three (you don't have to remove them) you can move the pump towards the engine and create enough 'slack' in the belt to remove it.
It is the rear belt so you have to take the other belt(s) off first and then the pump belt.
Install the new one and carefully pry the pump outward to tighten the belt - DO NOT Crush or dent the pump housing! - it will leak!
While holding tension on the belt tighten the three screws.
Get youself a graemlins/beers.gif

Thank ya very much for the help.