It is really all a matter of practice, you can mimic grid or vudoh easily.
My AUI (or in game "Desktop") Pandora @
http://www.wowinterface.com/download...I-OpenRDX.html would be a good place for you to start.
What I mean by that is, the best way to learn how to make anything in RDX is practice, and the best way to practice is to tear apart someone else's work.
Look at how it was made, and try to re-create it exactly in another design / window.
That is the BEST way to learn.