Hi. I am going to try to get a laptop and i was wondering if i can, with a new dell, reformat the laptop with windows seven pre-installed on it and install a Windows XP Pro OS on it. (I do have access to dell XP disks) or would it crash the computer? I would also like to know if i could use a normal XP disk. I have NOT bought a laptop yet and this will affect my choosing if I should buy a Dell.