These ebuilds come from http://git.overlays.gentoo.org/gitweb/?p=dev/genstef.git.
If you have some problems, go to the official site first.
kpowersave : KDE GUI for brightness, suspend, battery monitoring, using hal ( http://powersave.sf.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a genstef
For Paludis use this rsync : rsync://gentoo.zugaina.org/genstef-portage
If you have a problem : ycarus(-at-)zugaina.org