USB is a very long shot, but if it behaves like a normal mouse, and you had money to burn, you could put a PCI adaptor in there, put a USB card in that, and use it. Far easier to swap with your roommate ;-) The serial ports on all Amigas are fairly compatible with the standard 25-pin PC serial ports, and anydecent computer shop should have the 9-25 pin adaptors you'd need. I'm sure there are plenty of drivers out there for serial mice and serial graphics tablets, aminet'd bewhere I start looking!
