Upgrading to Poser 6 from Poser 5 was a big improvement in stability, and it adds some useful functions. I'm not inclined to rush to P7, but get a couple of Service Releases and an up-to-date computer and it will be tempting. But the preview mode introduced in P6 does need good OpenGL support. And you have to get the drivers from the graphics card manufacturer, even with WinXP. The drivers available through Windows Update were badly out-of-date.