That would be the ideal solution, but I am at work at the moment, and the IT department would have a fit if they found a device that wasn't theirs on the network, plus I have no free sockets near me anyway. I could use the real USB ethernet adapter I have, but I have no crossover cable so that is out.
The bottom line is that the USB TX stuff needs looking at anyway, so that is what I shall do, but I just thought I would place the packets here incase anyone recognised them