I want to install Windows XP in a separate partition for a dual boot configuration onto a Dell Laptop with Windows 7 preinstalled. Other posts suggest that to do this I must restore the Windows 7 boot sector after installing XP. Does anyone know if I can I use the Dell OS re-installation CD/DVD that comes with the machine to do this? I suppose another option is to repartition the drive, install XP, then reinstall Windows 7. Could I do this with the Dell re-installation CD? Which method is better?