VIA provides the driver and you put those file on a floppy disk - one of those files should give the system the information needed to see it as a driver
I did this on Saturday, and finally got XP 64 installed - I promptly installed XP HOME last night since the thrill of running XP 64 was gone after seeing that a lot of drivers were either not available or not working for me.
I'll wait for final release of XP 64 before I jump back into that.