Based from the info here:

http://www.osronline.com/ddkx/buses/usbsystem_3rjb.htm

It's a USB 2 driver that didn't ship with the original Windows XP disc. It only became available when SP1 came out. I suggest slipstreaming Service Pack 2 with your Windows XP disc, then reinstall Windows.

Get Autostreamer (for easy slipstreaming of Service Packs) here:

http://www.neowin.net/forum/index.php?showtopic=188337