The inital installs of Windows on the Mac Pro was successful. Unfortunately the Windows XP installation only recognized 2 of the 5GB installed. Apparently this is a known issue in Windows XP. Other than that issue Windows XP recognizes most of the hardware on the Mac Pro including all the Windows readable partitions on the harddrives attached to the system. The video, keyboard, DVD burner, and all connections; network, USB, and FW are supported.