We have a network problem. Everything was running fine until 2 weeks ago. We have 2 laptops and 2 desktops connected to a netgear DG834GT wireless router. Now 1 of the desktops is saying its connected with signal strength very good but when trying to connect to the internet it says server not found. There must be a connection somewhere as msn has tried to sign in a few times. My son knows a bit about pcs and he says he has tried all he can think of. The only thing that may have changed at the time was a IE update so we have also installed mozilla firefox. Please Help !!! Thanks for your time.