Creating Shortcut for Locking WorkStation

I was looking a way to create a shortcut for locking the workstation, XP has windows+l shortcut key, But there is cute way to create the shortcut for locking workstation.Go to your winnt folder, be careful find rundll32.exe and create a shortcut place it in desktop.Now go to the properties of the shortcut which you created before and look in to the target, add the below content to the target after a space from the existing one user32.dll,LockWorkStation,Rename your shortcut to Lock and try to click it.Oops! ....it works