So you are still only able to go to the one website?
In the router UI, are you getting a WAN IP address, gateway, and DNS server(s) addresses?
From your computer, can you ping 4.2.2.2 (click Start. in the box type CMD and press enter, at the prompt type ping 4.2.2.2 and press enter)? If yes, you are connected to the Internet. Try pinging a website - ping yahoo.com. If you are not getting replies, either DNS servers are bad or they are blocking your access.