I have to say that I get by on 512 ok too, but when watching the performance monitor, I see Poser often go up to a gig, which means its using the page files in Win2k a lot (and the HD runs). I too have Poser installed to a different physical drive as my OS. In fact, I have two OS's on the C drive on the same partition (ME and W2K pro). I installed P4/PP in the ME system and just linked an icon in Win2k. Works just fine for me. (I only installed P5 on the win2k side, and have not tried it in ME). So I think my system is probably a bit more convoluted than yours and since Poser works fine on a different physical drive with a different drive letter, I'm not entirely sure that this is the problem. But, XP is a different animal. What tips me off is that you are making some very large renders and as such, need some computing power to do so. The 2g cpu should be fine, I have a 2.1 amd. Aside from your system having a different OS, and more ram, we are running similar setups. I thought XP prompted for a swapfile increase when it was running low. It does at work with various programs, though I don't use poser at work. Well, all that said, I guess I have to agree with rogergordian. I don't think the purchase of ram is the problem. I'd look elsewhere and defragging is a good place to start.