Windows Vista is out now on MSDN, so go and download it. If you have an x64 processor (either AMD or Intel), I personally recommend the x64 version of Vista. I found that it has pretty good driver support and everything sees to run fine (including the important things like WoW). The only thing I know not to work is connecting a BlackBerry since RIM sucks and does not have a 64 bit driver. As a reminder, for the most part Windows XP 64 bit drivers work fine in Vista when necessary. So don't be scared off by the 64 bit. I've been runnning it in beta for a few months now and am very pleased with it.
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