WRT54GL Single IP Setup
From XMission Wiki
1. Connect the Ethernet cable from the UTOPIA Access Portal to the uplink port on your Linksys WRT54GL.
2. Connect an Ethernet cable from the Ethernet port on your computer to one of the lan ports on your Linksys WRT54GL.
3. Open your web browser, you will most likely get an XMission Welcome screen. In the address bar, type 192.168.1.1 and press the [Enter] key on your keyboard.