Shortcut to lock your computer

If you want to leave some where hurry,but you don't want to log off.
you can make shortcut for it.It is a desktop shortcut.Follow these steps.

Step 1: Create a shortcut in your desktop.
            Right click the desktop,point to new and select shortcut
            when the shortcut wizard open,type following code In the text box
           " rundll32.exe user32.dll,LockWorkStation"

Step 2: Click next and enter the name for shortcut.choose any name for it. 
            Click finish.

Step 3: now you can lock your computer easy.

    OR

Press "Windows" key + "L".

Enjoy it