Leaving your computer in a hurry but you don’t want to log off?
You can double-click a shortcut on your desktop to quickly lock the keyboard and display without using CTRL+ALT+DEL or a screen saver.
To create a shortcut on your desktop to lock your computer:
*Right-click the desktop.You can also change the shortcut's icon (ie: the padlock icon in shell32.dll).
*Point to New, and then click Shortcut.
*The Create Shortcut Wizard opens.
*In the text box, type the following: rundll32.exe user32.dll,LockWorkStation
*Click Next. Enter a name for the shortcut.
*You can call it "Lock Workstation" or choose any name you like.
*Click Finish.
To change the icon:
*Right click the shortcut and then select Properties.This would save you only one keystroke from the normal command, but it could be more convenient.
*Click the Shortcut tab, and then click the Change Icon button.
*In the Look for icons in this file text box, type: Shell32.dll.
*Click OK.
*Select one of the icons from the list and then click OK
*You could also give it a shortcut keystroke such CTRL+ALT+L.