I just bought a Motorola Surfboard cable modem. I also have a wrt54g router with Hyperwrt firmware. When I run the ethernet cable from the cable modem directly to my computer, I can get online. I'm having problems getting it to work with my router. I'll hook my cable modem's ethernet to my router into my internet port. After that I'll run another ethernet cable from port 1 of my router to my computer's ethernet port. I pretty sure there's something I have to change in my router's firmware. I can get to the firmware by typing 192.168.1.1. My router is using dhcp, and isn't using mac address filtering. I think a port might be closed or something like that. I don't think I can access my cable modem's firmware. Please help!