I'm not up on the exact specifics, but what I do remember of the USB specifcations seems pretty much locked to one computer on the bus. Your USB drive would expect to be given only one Device ID, wouldn't be able to deal with simultaneous requests from more than one machine, and from what I remember the root hub on your motherboard is locked to device ID 0, so if there was another root hub on the same network it would conflict.
In theory it would be possible to build a drive with multiple USB interfaces, but it would be expensive and highly specialised, I dont think anyone has built one of those. The idea dosent scale very well either, so I doubt it will happen.
You might be able to build/buy a USB data switch that would let you switch the drive between computers (maybe even remotely if you work at it) but I've never seen one.
EDIT] Did a brief search, most of them are manual switches, probably no use to you, but this:
http://www.datapro.net/products/UH-241.html
Looks like it could be useful. Only four machines though, you might be able to chain them.
[ 08-07-2003, 05:19 PM: Message edited by: andrewas ]