Edit /etc/apt/sources.list

#vim /etc/apt/sources.lis

deb http://ppa.launchpad.net/bisigi/ppa/ubuntu jaunty main

deb-src http://ppa.launchpad.net/bisigi/ppa/ubuntu jaunty main

#apt-key adv --recv-keys --keyserver  keyserver.ubuntu.com 0xfbef0d696de1c72ba5a835fe5a9bf3bb4e5e17b5

#apt-get update

# apt-get install arc-colors community-themes gdm-themes gnome-backgrounds gnome-colors gnome-themes gnome-themes-extras gnome-themes-more metacity-themes shiki-colors zgegblog-themes