I need some help.

I have a G5 2ghz and last day pass me an old audio interface PROTOOLS TDM 882/20.
this hardware works with old pci cards... can i run with my G5?
are compatibles PCI in PCI-X on G5?

some guys tell me existing box converter pci to firewire, it's real?
...some one can help me?



g4 350mhz 40gb 800mb / g5 2ghz 160gb +120gb (external HD plug it in a crashed cd-rom firewirebox)