how to customize or change the power button action in windows 7 start menu to shutdown,switch user,log off,lock,sleep,restart or hibernate

We can change the Power button Action according to our requirement in Windows Seven Start menu As

• Shut Down
• Switch User
• Log Off
• Lock
• Restart
• Sleep
• Hybernate

Process to change Power buton Action:
1. Right Click of mouse on an empy space of taskbar and Choose "properties"
2. On the "taskbar and start menu properties" window , Navigate to "Start Menu" tab.
3. On the "Power button Action" Choose the desired action from the drop down list.

4. Now "apply" the changes and click on "ok".
5. Now click on start button and see the changes.