Have an Airport Express. Was using it in wireless mode to connect to my wireless network via WRT120N. I decided since I had an open port on a hub right by the airport to connect via Ethernet for a more reliable connection. Reconfigured the Airport to connect to an existing network via Ethernet. Now I can't see the Airport express. I CAN see it if I plug my notebook via Ethernet into the Hub the Airport is connected to or directly to the Airport. But if I plug my notebook into the WRT120N router via Ethernet, I can't see it! It is as if the router isn't routing the Airport traffic even to devices on the LAN! Strange that it works okay if I connect the airport to the WRT120N via wireless! Help!