Belt Replacement

I have a 2000 4.3l v6 2WD with A/C. I'm getting ready to replace the belt tonight and was wondering if there is anything tricky about this that I should know about. It seems straight forward but after my shift knob fiasco can't handle a surprise right now.
Thanks.

If you have ever replace a belt that has a self tensioner this should be easy. Make sure you have a half inch ratchet that is long or at least a cheater bar you can put on it for alittle extra leverage.