I just built a new system from parts, from newegg - and still had problems. I had to return 2 hardrives and a video card before things were right (thanks newegg for a good return policy).
There is a quality control issue with pc parts, across the board - at least thats what I think.

My issue with win 64 was that I bought it OEM. Later I was told had I bought xp32 bit, I could have had a free upgrade- and a dual boot system. Now, if I want xp32 I have to buy it, or wait for Vista which i think will have both versions on the CD???

So I wait - truth is Poser works fine on xp64 - sure it doesn't use all 4gb of ram I have but oh well....Rendering is preety fast on my dual core that I have OC'd to 4.1ghz each!

Still, 64 has issues:
My copy of Z-brush won't even install. If I use MS system update it installs a patch that kills QuickTime.
My nice new DVD burner with lightscribe only works as a CD. No program can see it as a DVD.

And my Adobe production suite is glitcy ....

Imagine a system where POSER seems to be the most stable app!!!!!!!

JP