Hi i recentley bought

Question

Hi i recentley bought a new dell inspiron 1501 model and the internet has stoped working all together.All it ever say's is cannot communicate with primary dns server(66.82.4.8 this really causeing me alot of prolems. Is there anywway to fix this problem.Ive tried everything winsockr eset and firewall nothing all of my other computers here work fine. Im using a linsky wireless router but When i type in my routers ip address 192.168.1.1 it fails also but works fine with my other computers.Please help if it is possible thankx. Jonathan