Fix my router, win $5!

[Percula]

I hope you did not run at worthless "internet connection wizard" thing... it tends to hose up network connections.

Look and see if any of your connections are "bridged". If they are, break the bridge.

If you have another PC there, hook it up and test. But frankly if you hookup to another WiFi network and everything is fine, more times than not, it is your router.