Changing the behavior of closing the top of a laptop in KDE4

["Guan de dio" <guan.dedio@gmail.com>]

Hi everybody

      I want to change the behavior of the OS when I close the top of my laptop. Currently  It is "starting  in Suspension", and I want to set in "don't do nothing".

     Where is the  file or program to set this setting? I don't find it in KDE4.

Thanks,
GUAN