Help with wireless issue (read details)?

Ok, I have a Dell laptop with Windows 7.

I am in graduate school right now and I live in a university apartment where we get the University's wireless network.

Up until last summer, my internet worked fine no matter what network I was on. But then all of a sudden, It will allow me to connect to any network and shows that I have internet connectivity but then when I try to get open my browser it says "Server Not Found". When I run Windows diagnostics (which I know is not the best way to figure out what's going on) it basically tells me that there is something wrong with my DNS server. I have flushed DNS and renewed it but I still have not been able to get onto any other wireless networks.

It's confusing me because I still can get onto the university's wireless network with no problems. Is there a way that the university's network has made me have a static DNS or something? I don't know what's going on.

Let me know if you need any other information