For the card its best to check:
http://www.linux1394.org/
Dual chip cards are always a little iffy, but who knows...
The P75 probably doesn't have a decent enough PCI subsystem to hack it, its probably pre-2.0 compliant let alone the 2.1 that is going to be a minimum for a card that nice. Its reported in dmesg though, so just check what the PCI BIOS reports.
Cheers,
Finegan