If you have the Consumer level service, your DW6000 acts as a router by itself. There is therefore no benefit to having a separate broadband router. In fact, a separate router will complicate your network unnecessarily. You will need a hub or switch and/or possibly a Wireless Access Point (WAP) in order to expand the single Ethernet port on the DW6000 to the number of computers on your LAN. Either a hub or a switch will work, but a switch is preferable from a performance standpoint.
Using any standard Cat5 network cable, attach the Ethernet port of the DW6000 to the any port on your switch. If your switch has an Uplink port, you can use that, but keep in mind that the uplink port shares circuitry with one of the standard ports on the switch; usually the one closest to it, or the last standard port on the switch. This means that you cannot use that shared port if you use the uplink port, and visa-versa.
Using any standard Cat5 network cables, connect each computer on your LAN to the remaining ports on the switch or hub.
The DW6000 has a built-in DHCP server so you can set up each computer to get its IP address and DNS information automatically. For Windows users this is the default if you run the Windows Networking Wizard, and is the simplest way to successfully get your network running.
If you want to set up static IPs on your network, the easiest way would be to use IP addresses in the range of 192.168.0.2 192.168.0.254, subnet mask 255.255.255.0 and a DNS server of your choice. 184.108.40.206 is a valid DirecWay DNS server you can use.
For wireless networking see: /faq/8506