RUNDLL32.ORG

You can lightly two mouse clicks, the lock on their Windows XP system. Please click the mouse on the desktop right-create a new shortcut, and then fill out the location of the project, enter "rundll32.exe user32.dll, LockWorkStation".

And then give this a shortcut for your favorite name, such as "Lock computer." It's that simple - now, you just use the mouse double-click the shortcut, your computer will be immediately locked. If you think this is not enough simple, at the same time hold down the keyboard on the "Windows button (the icon that XP)" and "L" button, will have the same effect.