It's my guess that your problem with the brick wall is your 2wire router. Some routers do not have good UPnP support. UPnP is where programs such as LW send requests to your router to open a port for listening during that session. Port forwarding the 2wire would be the answer. However, Else it is the wireless service. Your ISP's routers may have various ports closed. I've read of similar problems with wireless ISP services.