Do not know if this is of any use but I installed a Tekram pci fire wire card about a month ago.
My O\S is X\P and it had the drivers already in the cab files. Have you looked in device manager for IEEE1394 bus host controllers, is the card listed there, if not reseat it. If it has a yellow asterisk next to it delete it and reboot.
The driver should be VIA 1394 OHCI and should be on either the 98 or 2000 windows disks.