Quote - When I got my new computer I went with XP Pro 64 bit. I really like it. Poser 7 flys, and I expect the new Poser Pro will do even better.

The only "complaint" I have with it is that there is still alot of programs that aren't compatable ( for example Adobe Flash isn't 64 bit compatible). So I am just having to be patient until the rest of the world catches up.

That's where I'm at, too. I'm very happy with XP Pro x64, despite the odd (not very many, thankfully) issue with specific software. Poser runs very well, as do almost all the graphic applications I use. (Flash being the exception.) A few audio plug-ins (32-bit DXi are not supported so I have been forced to go completely VSTi) have also posed some adjustments.  Overall, though, no regrets at sticking with XP Pro and going with the 64-bit flavour.