Shot in the dark here, but how did you new Windows 7 people install Poser?  Cuz I reinstalled Poser Pro after installing Win 7, and now renders take 4x longer in the Render Queue than on Vista.  Multiple threads is set at 4, "Separate Processes" checked, but still nothing.  I moved my Runtime folder to the other HD during install, then just moved it back into Poser after I reinstalled everything.  PP is installed to Program Files (x86)...am I missing something?