what kind of OS are you using? If they are windows based OS, just install NetBeui protocal, no need TCP/IP, so no need to set IP address lah.<br>Or if you still want to set the ips, specify them in the same network, say 172.1.0.1,172.1.0.2,172.1.0.3 and the subnetmask is 255.255.0.0