You can install it through our automatic script installation system - Fantastico. Here is the way of installing Xoops from Fantastico:

cPanel --> Softaculous --> Portals/CMS --> Xoops --> Install

The other way you can install Xoops on your account is to install in manually. If you want to perform a manual Xoops installation and you do not know how exactly to do it, you can follow our detailed tutorial here:

http://www.siteground.com/tutorials/xoops/xoops_manual_installation.htm