So I'm trying to set up Airport Extreme as the base for my home wireless network. I've never had wireless in my home so this is a foreign process to me. I seem to have hit a wall with this error message: "Your Base station does not have a valid IP address. Make sure your base station is connected to your broadband modem or local network, verify your settings, and try again. If you still cant connect contact your internet service provider." How do I fix this? It is giving me an option to access via PPoE. Is that the solution? If so what do I do. Thanks in advance for your help.