Alright, this is one step I don't know of.
Right now my hostname is 'localhost.localdomain' What exactly would I enter for the "host.domain.com" part? I've got 3 domains that I've purchased. Those are mentioned in the 1st post. Before when I've changed it just to see what happened, it took nearly 15 - 20 minutes to boot up. It would stay on the 'resolving hostname' screen.