3d game with 2d windows

i trying to lean how to do this. menus butons and options...

i make this interface, simple... works with 3d background..
the butons are 2D drawings, like lines or rect....

using rectsoverlap...

and make a include with funcionts like.. createwindows, cloes, show hide windows.. etc...



spritecandy is very nice.... but $$

spritecontrol is nice too...

but nothing like the own interface...