Linux-to-Windoze USB networking?

[Vaughn Treude]

Hello everyone:

A friend of mine has two notebooks, one Linux and one XP.  He'd like to 
transfer files between them in a convenient fashion.  They both have ethernet 
interfaces, but the Windoze machine is already set up in DHCP for his 
internet connection.  It would be possible to change this to a static IP 
every time he connected the two together, but that sounds like a pain.  I 
thought that maybe the USB ports would offer a more convenient solution.  
I've already found some detailed Linux-to-Linux instructions at 
www.handhelds.org, but I was wondering if anyone had seen any "howto" 
documents or products that address this problem.

Thanks,
Vaughn