Hardware :: Airport Extreme - Unplug And Plug In Back?

I hope these are the right boards to put this in. I'll try to sum up my problems as best I can. So we have what seems to be an Airport Extreme (fairly certain, as it's very circular and white; it also says Airport Extreme on it now that I look at it). It's worked for a long time, and I've never had any serious problems besides having to unplug it and plug it back in again. Here are the things we use the wifi on:

iPod Touch (3G)
eMac (10.3.9)
Refurbished iBook (now with 10.5)
PlayStation 3

My brother has a new 4G iPod which doesn't want to work with the wifi. My friend however got the same iPod within the same stretch of time, and his iPod totally works at my house, but his old 3G didn't (try to keep that straight). But that's beside the point for now.Now I have been playing video games online on my PS3 for over a year now on this router, and have never had any big issues. Now, it refuses to hook up. When I enter the wifi in, the attempt to obtain the IP times out. When I go in and do it all manually, I get the DNS Error 80710102. I've tried restarting the router, I've tried restarting the PS3, I've tried going in manually and doing it, I've tried switching the Primary and Secondary DNS, I've tried switching the channels of the router (was on 10, now its on 1). I know of nothing that would bring about this change in how the router (or PS3) have been functioning, now I've hit a brick wall. (I should also note that the PS3 works on the wifi at other places)