If you have comcast you have a dhcp server. If you go into the web interface using the address 192.168.11.1 in your web browser you can go to the advanced settings and manually set up the internet connection for aquire and ip address automatically via dhcp. If you have a WHR-G54S or WHR-HP-G54 you will log into that address using root as your username and no password you will go to advanced on the top of the screen. Once there you will see "Method of aquiring an IP address". in that box select aquire an IP address automatically via dhcp server, then hit apply. If you still have no connection you will need to power cycle the modem and router. Basically unplug both the modem and router from power for 60 seconds, then plug in the modem. Wait until the modem is fully powered on (roughly 30 seconds or so) then power up the router. If you have any other model other than the ones I mentioned you will go to the option on the top that says Internet/LAN. The process will be the same, just under a different menu option.
