I was just thinking today that you can install XP (or do a repair install) overtop of the current install W/O having to give an admin password to veryify that it's ok for the install to happen. If you have XP Pro and use the security features to set permissions for directories, files, etc. and one of your users who wasn't an admin wanted to access a folder, etc that you denied access to then if they got their hands on your XP cd, they could reinstall (repair install) XP and make a new admin account (or use the Administrator account) to get at the folder, etc. I know that when your an admin and another admin denys access to a folder you can change it... I was playing around with my music folder and somehow locked my login from the folder... so since my account is an admin account I just reset myself as the owner and I could access it again... so if you have your protected data on another partition or drive they could do the same thing after reinstalling (repair installing) XP. Or they could just decide to trash the computer by doing a clean install and then delete the rest of it from your other partitions. Personally I think that if you want to try to install overtop of a current install... or repair it... that you should have to give the password for the Administrator account. That would make it a lot more secure.