Ahh, I see... sounds a little bit like Autosketch, aka AutoCAD LT back in the day, but more limited. Back then you could import a 3D drawing into LT and look at 3D objects, you could copy them and do some editing but you couldn't create them.
I'm very impressed anyway and I think its great what you're doing and how you're sharing it with the community, keep up the good work! For me of course I have so much invested in AutoCAD (programs, drawings, $$$) that it would be difficult to switch, not to mention that after 25 years of drawings in ACAD I don't think this old dog could learn something new, my fingers draw disconnected from my head now... (don't tell my clients that!
I'm looking forward to making a video of my program sometime soon and I'll post it here. By the way, anyone using Chief Architect? People I work with are checking it out, they like the ability to bring an Acad frame into it and draw the archtiectrual elements around it. It looks like its much easier to use than AutoCAD's Architectural package, but I couldn't say for sure....