I'll give that a try when I get home. Yes I do have admin rights to the computer.
Does keeping this thing a domain controller have any advantage?
You're trying to do this to the domain controller?
That's done in a different place. Let's see....
Start, run, administrative tools, "administer your server".
At the top of the window -- add or remove a role. click through, follow the bouncing ball and remove the domain controller role.