Alternator Replacement on 2001 Altima

My buddy has an 01 Altima with a bum alternator. The thing is, i cant figure out how to get the godforsaken serpentine belt off. If anyone has a step by step instructions list for how to get the belt off and what needs to come off to get the little bastard outta there, I'd be forever in your debt. Thanks fellas (and ladies).