Click 'Start -> Control Panel'
Click 'View Network status and tasks'
Click 'Change Adapter settings'
Right click on 'Local Area Connection' and click on 'Properties'
Click on 'Internet Protocol Verion 4 (TCP/IPv4)' to highlight and select this item and then click on 'Properties'.
Click on 'Advanced'.
Click 'Add' to add new IP
Enter correct Ip informations and click 'OK'
Then click the necessary number of 'Ok's for windows to save your changes. You have now added another IP address to your server configurations.