Are you sure it is showing as ATAS? I think it is the SATA(serial ATA), but it shouldn't shows up on xp unless you get into the BIOS.
Of course I'm sure it says ATAS and not SATA, please no more questions of this caliber please.
I always when setting up a hard drive, make the 'my folders' so they show hidden files.
Thanks for all who tried, but I have selected best answer now; so there's no more need to try to help.
Please, no more responses are needed, thanks.