http://www.captainwicker.com/pacemaker.htm
The cool thing I thing it's done in basic, I thing the Icon it's Blitz Basic, ins't?¿...
Cool export to .X I don't test, and it's easy make things...
PS: If you can see the viewport without nothing, load a sample model, I don't touch too much but seems an interesting tool, and free for now.
Excellent find. Cheers :)