So I finally got pissed off enough to look this up. I remember doing it a few times in the past but nothing really worked properly. But I stumbled across this method that removes the stupid ad on the top of the program. Go to your hosts file which is usually located here-
Open it up with Notepad. You'll probably need administration access if it refuses you. Just right click and open as administrator if you get that problem. Then paste this into it at the bottom and save. Restart skype. The top will be GONE!