I built a shuttle system for son and Im building two more for friends at
the moment and I recall reading that some Shuttles dont have (and I
looking for this information again as I write this) its either a driver
of something turn on in BIOS for the SATA connection. As soon as I find
it again Ill post it. I dont have that problem on these shuttle systems
as it effected another model so I only quickly read through it.

I dont have a lot of experience with SATA except to know I just plug in
the CDRW and HD and they work. XP Pro has always seen it for me.

Do you have SP1 or 2 XP and is it Pro or Home?