How to lock Computer using Mouse?

This trick is a very old geek gyes. But still i'm posting it here because it will be something of intrest for the newbies. If nothing, atleast this trick helps saving time. 

Process:

• right click on desktop >>> new >>>shortcut
• Copy the following into " type the location of the item ". 

          " rundll32 user32.dll,LockWorkStation " ( remove quotes  )

• Click Next
• Now in " Type a name for the shortcut " write " PCLOCK "
• Finish
• Done. Now whenever you double click the shortcut your PC will be locked.