These ebuilds come from http://git.overlays.gentoo.org/gitweb/?p=proj/gnome.git;a=summary.
If you have some problems, go to the official site first.
spice-gtk : Set of GObject and Gtk objects for connecting to Spice servers and a client GUI. ( http://spice-space.org http://gitorious.org/spice-gtk )
vinagre : VNC client for the GNOME desktop ( http://live.gnome.org/Vinagre )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gnome
For Paludis use this rsync : rsync://gentoo.zugaina.org/gnome-portage
If you have a problem : ycarus(-at-)zugaina.org