Why won't my linksys router work?

So yesterday I try to log onto Call of Duty 4, to get a dns error message 80710102, searched online and found this forum post about how to solve the problem. Basically I typed my router’s IP adress into the address bar of my web browser, and changed the DNS primary and secondary to the specified values, and nothing changed.

Everything in my house (computers, ps3, iphone) recognizes the router signal, and says it’s fully connected, but cannot get onto the internet.

I’m dying slowly here. I tried logging onto the technical support of linksys’s website, but I couldn’t view the webpage.

Oh and if you’re wondering, this computer is in the top corner of the house opposite everything else, and is using the neighbors wi-fi :)