Bolded for emphasis. That is proper, ACEGUI is not - Ace is not an acronym.
At any rate, I'm going to say this yet again; people who are new to AddOn development should stay the hell away from AceGUI - it is a library for advanced (non-beginner) GUI needs. I really wish there was a disclaimer at the top of the description to stop people from getting themselves stuck in that quagmire when all they really want to do is simple default UI things.
All you need to do, based on your description of needs is: