What version of XP are you installing? Is a pre Service pack 1 install cd? Sounds like you are trying to manually install sata drivers before the install starts.
I've tried and do as this link: http://www.youtube.com/watch?v=gZYck46oyXE
But now it says:
Insert the cd labeled: Windows xp professionel service pack 3 CD, into your cd-rom drive.
Press ENTER when ready.