I have the above devices with latest stock firmware.
1st network is WRT54G as a gateway router for 3 wired PCs with cable modem tied to WAN port. Router IP is 192.168.1.1, with other PCs getting .100, .101, etc. assigned by router's DHCP.2nd network is BEFW11S4 with one wired PC. Also setup as gateway router with router IP 192.168.2.1, and PC assigned 192.168.2.100 by this router's DHCP. Not sure if it should be gateway or router mode, and what WAN IP should be assigned.
WET11 should bridge the two networks. It should talk wirelessly to 1st network, but be wired to 2nd network. I believe I want the WET11 to plug into the WAN port of 2nd router. Despite having all three lights lit on the WET11, I can't get it to talk wirelessly in the configuration I want. I have been able to get it to function plugged directly into a PC, proving that the wireless part of the setup (WEP, ssid) has been done correctly. In the web setup for the WET11, I have selected a static IP of 192.168.2.254. Not clear on what the rest of the settings should be, and I am tired of guessing.