sudo wget http://archive.infralinux.org/infralinux/intrepid.list -O /etc/apt/sources.list.d/infralinux.list
sudo apt-get update && sudo apt-get install infralinux-keyring && sudo apt-get update
sudo apt-get install infralinux-desktop && sudo apt-get upgrade
 

Tutorial from here:

http://www.infralinux.org/for-ubuntu-users.html