I have Windows Vista.

Maxwell (that 4GB RAM using freak) runs, Poser does even better.
It's not stellar though- I'm using SreeD + 2005 nVidia XP drivers, and I minimize Poser while waiting for the program to snap back into consciousness...

Must be Vicki4. She rocks- basically everything, even my PC. Syd and James G2 work well and are responsive. (Athlon XP 2500+, 768MB RAM, Vista RC2 with User Account Control disabled)

In This Twilight- My FIRST public poser work in 2 years!
Also the reason why I endorse postwork (:D)