to get the repair option from an xp cd, you need to choose to install it from booting from the cd. Eventually after you tell it about 3 or 4 times you're installing a new version of windows it searches for old versions and tells you "found another install of xp. Do you wish to repair or replace?" or somethign simliar. I just did an xp install 2 days ago. It's there. the option is NOT available from the graphical install.