ksnapshot is not lanched pressing Print Screen

[Guan de dio]

Hi everybody,

     After some days upgrading my PC I can install all the KDE 4.2.2 and the
application. I only has a small issue, when I hit the Print Screen button I
want to  KSnapShot was lanched.

     I was looking for do it in KDE4 what I can't find the site to set it.

Thanks in advance,
GUAN