OK, so I mentioned some USB stuff in another thread, and Drakino pointed me here, and since I didn't have my soldering iron with me over Christmas I have been working on this.

Currently when I plug in my Empeg to my Win2K machine it finds a NETGEAR FA101 USB Fast Ethernet Adapter. I chose that adapter as it was available in CompUSA while I was there (so I have the real HW to see what that does), it uses the PegasusII chipset which is supported by Linux, and it is made by Netgear, so the drivers are available and it is supported.

The attachment shows the properties window, check the location field to see that it is actually the Empeg connected. At the moment it doesn't think the network cable is connected, so doesn't send any data, but I am working on that at the moment.

NOTE: This is using my MKII, I haven't tried the MK1 yet as the Mrs has it in her car at the moment.