Windows 7

1. Click on the Start button, and choose Control Panel.
2. Click on Network and Internet.
3. Click on Network and Sharing Center.
4. Click on your Network Connection (which may be a Wireless Network Connection).
5. In the (Wireless) Network Connection Status screen choose Properties.
6. A new window will pop up. Highlight the Internet Protocol TCP/IP Version 4 (TCP/IPv4) option, and click on the Properties button.
7. A new window will pop up. Enter our DNS addresses (78.47.115.195 and 78.47.115.198) in the appropriate boxes, by first selecting the radio button called Use the following DNS server addresses. Look at the Internet Protocol Version 4 (TCP/IPv4) Properties  window below, since this is how it should look like when you are done. Make sure you also check the box, Validate sttings upon exit.
   
8. Once you've updated your DNS settings, you just have to click OK and Close to confirm your changes. You don't need to restart your computer for the new settings to take effect. When you're back online, visit http://gov.ttf - If it loads, you're done!