Trick to lock your desktop in Xp

This trick will lock your desktop in Windows xp
TRICK 1: First create a new shortcut on your desktop using a right mouse click
and enter 'rundll32.exe user32.dll, LockWorkStation’ in the location field. Name the
shortcut what ever u want to like abc. Then just double click on it and your computer will
be instantly locked
TRICK 2: The Windows key + L also do the same thing

and to unlock click on ur account name and enter password if required