IPOD TOUCH 2ND GEN NOT WI-FI PLS HELP?

when I try to go to any application that requires Internet (Safari, utube, games) that would not let me When I try to access Safari says "can not open the page, Safari can not open the page. The error was: "There was a communication problem Proxy server with Web (HTTP) ".. For youtube says simply says" Can not connect to Youtube "For games that need internet that says' Error unknown. An unknown error occurred (Error Domain = kCFErrorDomainCFNetwork Code = 306 UserInfo =……….. "There was a problem communicating with the Web Proxy Server (HTTP )."). Please close the application and try again. Plsssssss help me get my internet back that used to work, but now I dono why has wi-fi Internet through instant messaging to my laptop right now. I used to have wi-fi for my IPT until yesterday.

Could Unless you do not have internet or you may have a virus.

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