Networking question

Sunday, May 06, 2007 by Dave Winer.

Okay, here's a dumb question about routers. 

Let's say I have a router, and I plug four computers into it via hard wires and two computers in via wifi. All six computers can see each others' shared disks, and life is good.  

But all the jacks on the router are used up. I just bought a printer that works over Ethernet. I want to make it visible to all the computers. So I buy another router, unplug one of the computers, plug it into the router, and plug the printer into the new router. However, the only computer that can see the printer is the one that's plugged into the same router. 

Do I need to find a router with more jacks on it, or is there some way to configure things so that all devices plugged into one router can see all the devices plugged into another? 

All the computers are Macs, btw. 

Please post any ideas here.