FYI XP (and all other Microsoft OS's) don't find SATA hard drives when you try to install them onto a fresh system...at least the first version of XP Pro doesn't...one with SP1 might. Anyway the solution is to press F6 as soon as it starts to boot of the XP CD and it'll then allow you to point to your floppy drive where you need the SATA drivers. There's a good thread here that points out exactly which ones you need.