First, Connection-specific DNS Suffix : should not be your router name which I assume is a Belkin? There should be only an entry there if your ISP requires it and it would take the form of xxxxxxx.com etc.

I have seen enough to say a “hard reset” of the router is required. If you don’t know what I am talking about or don’t know how to do it, call your ISP provider and they will walk you through it. This is extremely important since it will reset the router to the default manufacturer setting or those set by your ISP if they provided the router/DSL modem. Again, all settings will be wiped on the router including the wireless settings you are now using connect with on your notebook.

Lets see what Essexboy says.