IEEE 1394a and lan

[Srecko]

I'm using a cable modem to connect to the net, my network card forn now is some bad product from realtek. I looked today on the backpanel of the mobo and saw IEEE 1394a connector, ok i thought maybe i could use it instead of my realtek card, but the problem is wehn i go to networ connections and click ond IEEE 1394a then properties i don+t have the physical adress like other network cards. I need the physical adress so the ISP can change the setting and grant me internet acsess.

Maybe you guys can help me?

Thank you!