Attached Link: http://www.microsoft.com/hcl

Under Windows 2000 or Windows XP (Beta), right click on the task bar and pull up Task Manager. Click on Performance and this will give you a performance monitor. When you run Poser, watch the performance. It should peg out at 100% occasionally. The app may appear hung while the processor is pegged. On my system I can leave it and it will come back to normal and then for no apparent reason will peg the processor again. Poser does not allocate memory and handles the way that we would expect them to. After you have accessed an object in Poser, it still retains a finger on it and that consumes resources. These are not freed until you have exited Poser. If your machine is actually crashing, try downloading a signed/logo'd video driver from www.microsoft.com/hcl. The driver may not be as feature rich as the one from the manufacturer, but is stable. Advanced users can use PERFMON to monitor CPU usage and memory use. I have not been having problems on Windows XP (RC2) but I am also not rendering very large projects.

Which OS are you running on your machine? Windows 2000 and Windows XP (not yet released) should reallocate Virtual Memory to take care of this problem for you.