Finally, got it to work.
Took Propbeanie's advice and ripe everything out and started over, again. Cleaned the registry again, also. It appears NetFramework file was corrupted, did not install properly. Downloaded a new copy, and this time I got an additional dialog during install for other files that were needed to run.
Reloaded DirectX app and installed. This time, S3D installed.
Thanks Propbeanie for your support and advice.