I want to completely automate my server in order to focus more time on the business and support end.

I need a software that will be able to automatically create hosting accounts after a client has paid and allow integration of a domain name registeration The software needs to have a backend that will allow customers to update billing information as well as step e-mail accounts and other aspects of hosting. The backend must be able to be branded to have the look and feel of our web site. The software will have to integrate into a control panel.

What software(s) will I need to attain in order to complete the tasks stated?

I'm considering change control panels. I've heard of programs such as modern bill, but I need a software that I can easily brand.

Depending on your current control panel, there may be software that meets your needs.

However for total automation and, brandability it's hard to beat H-Sphere.

If I were to use Cpanel, what would be my best option for a software that would make my hosting completely automated.

Modernbill integrates nicely with Cpanel, or you can use WHMAutopilot which is specifially for integrating with cpanel