I've been having the same problem - no wireless networks listed, no "not shown" listed. I decided to try to set-up the Roku on another TV closer to the router. No success. Then I tried to connect the Roku to the router using an ethernet wire with the hope of upgrading the software and solving the problem. Roku showed a successful "wired" connection. Yet, even when connected via ethernet the download of the upgrade failed. So I tried to link the Netflix account and again, unable to connect. It seems that the problem lies with Roku's ability to "talk" to anything at all. The box takes commands from the remote but is unable to connect to the internet, OR a wireless connection. Very strange.