Anthony, there is a BIG difference regarding memory handling between Win98/ME and 2000/XP. Poser5 definitely needs more memory than Poser4/PP. Even Poser4/PP behaves better on 2000/XP. Before investing anything in graphic software, upgrade to XP and get as much memory as possible. I have XP with 1GByte Memory and I don't have the problems other people have. I saw a lot of posts of people having problems with Poser, Vue or other applications here. A lot of them were using Win98/ME. It's very often a memory issue.