Follow this guide for setting up TNT Stream Unblocker on Windows 8.
Move your mouse into right-bottom corner of the screen and click on “Settings”
Click on “Network and Internet”. Click on “Network and Sharing Center”
Click on “Change adapter settings”.
Right-click on the interface through which you are connected to the Internet and click “Properties
Click on “Internet Protocol Version 4 (TCP/IPv4)” and then click on the “Properties” button.
Click on the “Use the following DNS server addresses” radio button. Enter DNS Proxy IP address and click on the “OK” button.