With some advice from this forum I've now setup vista on a bootcamp partition and have pointed parallels at this installation which all works well. When I boot into vista I have the proper Radeon driver installed and can play games fine on max settings at the highest resolution, however if I try to run a windows game from Parallels in OSX it defaults to the Parallels video driver and 640x480 resolution. Is there any way of running games at full screen/full settings from osx or will I have to reboot into windows each time?