Just installed XP pro on that same 10GB partition. Only other thing installed: Wacom tablet drivers. Not even the ATI Radeon drivers. Rendering result again 43 seconds. (just shows again that the 3D card is not used by Poser) I don't have XP home edition, so I can't test that. Anybody have any bright ideas what could be causing the difference with johnnydnh's machine? (Apart from XP home edition being that much different from XP Pro?) Marc