how to control or enable power save and screen saver

Hi folks
Sorry for silly question but that’s what i am looking for:
how to control power save mode and screen saver.
Thank you for help, Gene.

In kde, right click desktop and choose configure desktop. In gnome, I think it is part of the system tools.

In KDE4.

For all first:
‘Start’ -> Configure Dekstop

Screensaver: -> Desktop -> Screen Saver
Screenpower: -> Display -> PowerControl
Power management: Hit Advanced -> Power Management