I am trying to run Backtrack4 with windows virtual pc but it is failing to load. THe problem seems to be the video for some reason yet I can run backtrack4 just fine under vBox (sun). Any suggestions would be great or if anyone had the same problem and found a solution. BTW my pc is a spanking new HP AMD phenom quad core with 8gig ram, ati radeon 9870 video card and im running windows vista/7 64bit.