Right click the start button and choose Run and in the run dialog box type
ncpa.cpl
hit enter or click OK
In the Network Connections window select then right click the network adapter that you are using and choose properties.
In the Ethernet properties dialog box in the middle area labeled "This connection use the following items"
Select Internet Protocol Version 4 and click the Properties button
General Tab...
Leave the top area alone
Near the bottom, select the radio button that says "Use the following DNS server addresses:"
Enter your Preferred and alternate and OK your way back out of there.