David,
Sorry I can't say I'm interested in developing such a specialized widget (to many other thing on my plate). As far as the CAD data if it is not georeferenced than does it even overlay with your data in the correct location?
I understand Robert...
Can I use it? http://forums.esri.com/thread.asp?c=158&f=2421&t=287068&m=892110
Thanks,
David