SysAdminGear

Fantastico is an autoinstaller for cPanel servers. It provides to end users the ability to quickly install dozens of the leading open source content management systems into their web space.
Is easy to install it, just read the instructions and you will have it installed..

You should login to your server as root.

Download Fantastico:
# cd /usr/local/cpanel/whostmgr/docroot/cgi
# wget -N http://files.betaservant.com/files/free/fantastico_whm_admin.tgz
# tar -xzpf fantastico_whm_admin.tgz
# rm -rf fantastico_whm_admin.tgz

Now you should login to WHM:
WHM > Add-Ons > Fantastico De Luxe WHM Admin and continue the rest of the installation.

Fantastico should be fine now.