
1. Go to Start > Control Panel.
2. Double-click Network Connections.
3. Right-Click the network connection ( Usually Local Area Connection) and select Properties.
4. Highlight Internet Protocol (TCP/IP) and click Properties. 
5. Click the Advanced button 
6. Select the DNS tab 
7. Click Add and enter the following DNS servers:
128.135.247.50
128.135.249.50
Remove any old DNS servers:
8. Click OK.
9. Click OK again.
Congratulations! Your DNS has been configured.