If you just want to reposition/repaint actionbars take a look at
http://www.wowinterface.com/download...BarStyler.html
http://www.wowinterface.com/download...tonStyler.html
If you want to create your own actionbar use either one of the big boys (Dominos,Bartender) or try sth like this:
http://www.wowinterface.com/download...ExtraBars.html
http://www.wowinterface.com/download...-ExtraBar.html
All that is needed is a secure action button with a keybind.