I have a Windows XP Pro "Upgrade" CD. I already have Windows XP on my computer, and would like to use the "Upgrade" CD to put a fresh installation on the computer (to have a completely clean copy, with all the current files on there to be removed). I chose the "New Installation" option during the Setup of the disc, and when it restarted the computer, it gave me the "which operating system do you want to use?" and the options were "Windows XP Pro" or "Windows XP Pro Setup," so of course I chose the latter. It then showed me that I already had an existing partition with Windows XP on it, and asked what I wanted to do with it. Since I would like to have a fresh installation, what should I do? I tried to delete that partition, and it wouldn't let me, saying it had "temporary setup files" on it that were necessary for the installation.