Double-click the My Computer icon on your Windows desktop.
Double-click the Control Panel folder.
Double-click the Network icon.
Click on the Configuration tab.
In the Network Components list, select TCP/IP for your Ethernet adapter and click on the Properties button.
The Network Window
Click on the IP Address tab.
Select the radio button labeled Obtain an IP address automatically. If your computer is using Windows Me, uncheck the box labeled Detect connection to network media.

The IP Address Tab
Click the on the Gateway tab. All of the fields should be blank. Delete settings from non-blank fields if necessary.
The Gateway Tab
Click on the DNS Configuration tab.
Select the Disable DNS radio button. All of the other fields should be blank.
The DNS Configuration Tab Click the OK button to close the TCP/IP Properties window.
Click OK again to close the Network window.
If you are prompted to restart your computer, click the Yes button.
Now that you have configured the TCP/IP settings for your primary computer, you'll need to configure your computer's Internet settings. Please see Configuring Windows Internet Settings.