Airport Issue need HELP ASAP

[Nitro1]

I have a Airport Extreme and all of a sudden when i got home i started playing Xbox live with no issues. When i started up my macbook pro Unibody the internet would say i entered the wrong password. I tried many times, i reset the computer, reset the router and the modem. I deleted the info from the keychain and then cycled it all again. The internet works fine. I am on it now but the router is messed.

I tried to go into Airport Utility and the computer can not even find the router. What is going on.

 

[Nitro1]

up date.

ok, i have tried plugging into the airport with a ethernet cable and then the internet still works and the airport utility picks the airport extreme right up. I have no idea how this is happening. WTF.