I made an add-on script for CPanel that install Joomla CMS:
This script will add Joomla! CMS in CPanel as an "add-on script" so users can install Joomla! from their site's CPanel interface with just few clicks.
In order to install it, you need a server with CPanel and administration rights (root). The script was tested with "X2" skin under WHM 10.8.0 cPanel 10.8.1-R21.
The script is free to download an is inspired from www.openinstaller.com