When it comes to cPanel, a lot of hosts have similar setups - Hostgator included.
Anything you change, just be sure that you have made a backup so you can revert should you need to.
As Lee stated, you're best not changing things unless you know what it is you're actually changing. Fantastico (if they have that installed) is a handy collection of scripts (about 50) that allow you to install all sorts of things. Just be sure that whatever you install, you keep updated. Outdated scripts is the most common method that hackers get into sites and deface things.
Backup backup backup - I can't stress this enough!