These ebuilds come from http://catmur.co.uk/gentoo/.
If you have some problems, go to the official site first.
control-center : The gnome2 Desktop configuration tool ( http://www.gnome.org/ )
gnome-desktop : Libraries for the gnome desktop that are not part of the UI ( http://www.gnome.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org