Network Neighborhood

I have a question. We have 3 computers using a wireless linksys router to connect to the internet through a cable modem. One of the computers is connected to the router with a cable and the other 2 are connecting using usb wireless adapters. 2 of the computers are win98 and the other is win2000. All 3 have different workgroup names yet all 3 show up in network neighborhood on all 3. Nothing on any of them is being shared so no one can actually see anything on each others but is there a way to have them not show up at all in network neighborhood?

 

At least on the Win98 ones, if you turn off File and Printer sharing, they should not show up in the Network Neighborhood.

On the Windows2000 one, you might try running:
net config server /hidden:yes