Change IP Address in Windows 7
Click on "Start" then on "Control Panel".
Click on "Network and Sharing Center"
Click on "Change adapter settings" and several adapter card icons will be displayed
Double click on the icon representing the adapter for which you want to change IP address:
Select Internet Protocol Version 4 for TCP/IPv4 Ip setting and click on "properties" and enter IP parameters as desired.
Click "OK" to save your parameters and you are done.