Drivers amd such aren't as big a problem as some would have you believe, I'm running Vista Ultimate 64 and as it was hand built they made sure all was ok.
I've updated my Nvidia drivers twice since with no problems and all my apps run fine [Vue6Inf, Poser6, Poser 7 and PS CS3]
Don't believe all the negativity you hear towards Vista, it takes some getting used to that's all because it does some things a bit differently but there are tweaks you can do to make it more like what you're used to!

Injustice will be avenged.
Cofiwch Dryweryn.