FREEWARE --- GUIGenie - http://www.guigenie.cjb.net/

Originally meant for JAVA GUI authoring, this tool can easily serve as image generator and design tool for prototype GUIs, menus, whatever.

Here is a screenshot of a debug menu which I built with GUIGenie and ported then to A6, featuring drop down lists, radio buttons and buttons. Virtually every GUI element can be emulated with A6, remember that. So we need no cheap "programmers art" anymore for prototypes and it also saves a lot of time, because its coordinate system is the same as A6's and we dont need to cook our own images... changes can be easily done when GUI elements are moved or resized..