Your board's information and download page is this: ASRock > K7Upgrade-600
Click on Download, and then your version of XP to show the drivers available.
First, are you using this driver from your board's download page, or on the disk: SATA RAID Driver - 134.11KB? That is a .zip file that must be unzipped before the files are copied to the floppy disk.
When using this driver, you must set the SATA mode to RAID in the BIOS. You do not need to create or use RAID arrays when in RAID mode, single drives work just fine.
Your board's download page has a link to instructions about using this driver, which has more information apparently than the manual:
Do not remove the floppy disk even though it seems to have read it, you must leave it in the floppy drive during the XP installation. Only when it reboots the first time after the installation is it safe to remove the driver disk.
Wow, an almost 10 year old board, will the new ones last that long...