you can use a firewire to network Mac & PC. A cut & paste article follows.
10.3: Connecting a Mac and a PC via IP over FireWire
Tue, Nov 18 ‘03 at 11:01AM
from: filburt1
Last night, I was able to successfully connect my Panther iBook to my PC via a 400 Mbit FireWire connection. Extending on a previous hint, here’s how you do this. You’ll need 10.3 on the Mac and Windows XP with a FireWire card (and likely, a 6 pin to 6 pin FireWire cable):
Make a new network location in System Prefs (Network Port Configurations -> New, FireWire). I called mine “Direct Connection (FireWire).”
Set the location to have a manual IP address; I choose 10.0.0.1 with a subnet of 255.255.255.0.
Disable all of the other ports on the Mac; i.e., only have FireWire enabled.
Turn on FTP Sharing in the Sharing system pref (in my experience, only this yields reliable, fast transfers).
On the PC, right-click on My Network Places, go to Properties, and right-click on LAN and choose Properties. Change the IP address to 10.0.0.2, and the subnet to 255.255.255.0.
Connect the two computers via the cable directly.
On the PC, open up your FTP client and go to 10.0.0.1/your short username. I suggest using Active mode rather than Passive as the latter always times out.
Transfer away!
I copied 1.1 GB of data last night in about three minutes; the transfer speed held steady at a speedy 5 MB/sec! Just remember to change the Location on the Mac and settings on the PC back to what they were when you were done.