You don't need any memory manager with XP. XP is extremely efficient about giving you back all your cache. Under Win98 it's optional. I had more memory free lowering my vcache under Win98 than using things such as MemTurbo. Unfortunately Vue and Poser aren't system friendly about multi-tasking during a render. They take over your screen too. You have to run programs on top of them which can cause problems sometimes. Maybe at some point Vue will send its rendering off to use Idle time like Bryce does and allow you to minimize during a render. Let's hope for that. (I have no hope for Poser, though).