Computer connection wireless internet?

[Ryan]

I have my modem plugged into the wall, it is from AT&T, I also have a Belkin wireless router connected to the modem. Here is my problem. The computer will show a strong signal and that it is connected but the router will have an orange light on it showing there is a problem, I have to unplug everything for a little while, then when it plugs back in the internet will work again. Sometimes the signal from the router is fine but the modem is not wanting to send the internet signal.
I have talked to AT&T who has told me that it is a router problem, I have talked to Belkin who said it is an AT&T problem. I have heard one time that the router and the modem over time start to share an IP Address and that is why they wont work. Any thoughts. Its very very frustrating.