V3 runs as well on P4 as it does on PPP or P5. I was running P4 on a system similar to yours, but PIII 450 and I was running Win98. Memory handling in P4 Win98 is a problem - it can only get at a limited amount of RAM - something like 125 meg if I remember it right. P4, V2 with all morphs and high res textures put Poser in danger of freezing and with a lean Vic it would after several renders. V3 is a whole nuther world as far as file size, my bet? Poser is choking from not being able to get enough memory. If you are using Win98, I have no idea if you have enough system to handle XP, but Poser 4 is an entirely new program under XP and a gig of RAM.