single domain - multiple extensions

[helper]

Greeting Earthlings!

RHES5, Apache 2.2, PHP 5.2.4, WHM/cPanel 11.11.0/11.15.0

We run our own DNS... however, it is not apparent to me on how to create a single domain with multiple extensions (we own the .biz, .com, .net, .org, and .us). Our goal would be to reroute all to the .com.

Is this possible through WHM or cPanel?

[Infopro]

Parked Domains in your cPanel.

Parked Domains (Domain pointers) allow you to "point" or "park" additional domain names to your existing hosting account. This will allow users to also reach your website when entering the "parked" or "pointed" domain into their browsers.