Well, I still haven't got the 3D textures worked out for the .X plugin, but I *did* write an Art of Illusion plugin which makes AoI a bit more like DoGA...
http://kolis.dyndns.org/ed/prog/part...rtselector.zip
Now you can just bring up the Part Selector window from the Tools menu and click away!
(Well, once you create or import some parts, of course
)