Turn Off screen

[uvlt]

Hallo!
I just installed lxde desktop on my samsung nc-10 netbook... It works pretty good, (fast for sure!)
I installed "samsung tools" from http://www.voria.org/forum/index.php and the function keys work except these that has something to do with my screen (maybe because of the xde?). How is it possible to make f.e. Fn-F5 (screen turn off) to work? Or make a similar key combination?

[seppalta]

A Directory for editing a lot of stuff is .config/openbox/mintlxde-rc.xml in your home directory.

[uvlt]

ok, i' check it, thanks