OK, cool, I was looking at some LinkSys EtherFast 4-port Routers on ebay for cheap.

How does this work? The cable comes into the cable modem as usual but the output of the modem now goes into the router, right? I suppose that's one of the 4 ports taken up already. So I can add 2 more PCs to my current one for a total of 3 concurrent Linux boxes on the net?

How about:
http://cgi.ebay.com/ws/eBayISAPI.dll...category=40993

http://cgi.ebay.com/ws/eBayISAPI.dll...category=20324

http://cgi.ebay.com/ws/eBayISAPI.dll...category=20324

TIA,