I have 2 hard drives on my mac pro, so I decided to try something. My first hard drive has Mac OSX on it and my second hard drive is empty. The first thing I did was install Boot Camp on my OSX drive and then I chose to install Windows XP Pro on the second hard drive in the Boot Camp setup, after the install of Windows on my second hard drive I then burned the Drivers CD and installed it. So now I have Windows Xp Pro and Mac OSX on my Mac Pro. The second thing that I did was then to reinstall a fresh new copy of Mac OSX on my first hard drive with no Boot Camp and I left the Windows drive alone. Now when I bootup my computer and hold down the option key I get the option to pick between Mac OSX and Windows XP Pro. Remember that I do not have Boot Camp anywhere on my computer, it was removed when I did the reinstall of OSX on my first drive!