if router doesn't assign IP
you can manually give IPs. Since they are internal IP, you can give any number you want. Examples are: 192.168.100.1 - 192.168.100.99. Protocols are: TCP/IP, NetBEUI/IPX/compatibles. The easiest way is to enable DCHP in each client. When booting, client will "lease" an IP from the router. Most routers now have DHCP server embedded.It can automatically assign IPs to client computers.