Many thanks to QWeaver for setting me up with Designer orthographic program. And to Jim for pointing me to D-CAD-L. And to Rooster for his continuing willingness to go over my sketches and bat around ideas. And to John at WoodHeat.org for answering my chimney questions.
Between all these, Google SketchUp and Adobe Illustrator, I'm sure to get some decent plans drawn up for our Dream Home. No, it wasn't a one-application solution that did everything I wanted for me, but it works and it's free.
You can't always get what you want; but if you try, sometimes, you just might find you get what you need.