In Control Panel there is the Network Connections icon.

Double-click it will open up Network Connection in Windows Explorer.

On the Left you can click the link to Create a new connection.

Rick-click the Local Area Connection 2 | Properties will open up the Local Area Connection 2 Properties which will allow you to edit your IP/DNS settings.

Another way to access the Network connection:
Start | All Propgrams | Accessories | Communications | Network Connections.