Have you looked at the disk and seen if that file is actually on there? Cuz if so, then that seems like a driver incompatibility issue.
EDIT:
the link you need is "http://china.giga-byte.com/FileList/Driver/motherboard_driver_raid_via_8237_bootdisk_2kxp.exe "
Run that file, it will extract all the files you need for the floppy. If anything , extract directly ONTO the disk. That way, no middleman. Use that as your driver disk