Attached Link: http://www.microsoft.com/technet/sysinternals/FileAndDisk/PageDefrag.mspx

I found that the performance of my page file was critical to Poser. If you can, put your paging file on a physically different disk to the one where Windows lives - or at least create a new partition to hold the paging file and nothing else. It's also helpful to defragment the page file: PageDefrag does this, and also several other Windows sytem files that aren't touched by a normal defragmentation run. I'm not sure if XP needs it though; I run Poser on Windows 2000 at home, and whenever I've tried PageDefrag on an XP machine it's told me there was no fragmentation.