Actually - I'm running Poser4 quite freqently under VPC (for testing purposes) and it works quite reasonably. The initial startup is endless and the mouse is a bit sluggish, but everything else works in an acceptable manner, including rendering (I'm on an 'olde 233/G3, so it doesn't really matter if the render takes 3 (Mac) or 5 (VPC) minutes... :-) Anyway - Poser5 does not install under VPC because of the so called "virtual dongle", and I would guess that they even added code to P5 in order to sabotage its usage. After all, VPC is available for the PC as well (to allow PC users to swap Win versions and complete disk images at will). If they would allow it to run under VPC then users could install it on a disk image and copy that between computers. So - don't even think about buying Poser5 (PC) when you are on Mac.