Carter tools has more info about cnc stuff than anyplace else! - http://www.cartertools.com/

cnc machine software - http://forestmoon.com/Software/MillCmdr/

Pro Desktop user page - http://prodesktop.net/

Tutorials page without the header - http://prodesktop.net/tutor.htm

Legos link for the assembly tutorial - http://prodesktop.net/edg3/lego_v8.zip

Link to the Simple.des part for the drawings - http://prodesktop.net/drawing/simple.des

Here are some project ideas found in response to student questions:

Catapult - http://www.fsea.org/pdf/CT1%20Catapultpdf.PDF

Future Scientist and Engineers of America projects page - http://www.fsea.org/frprojct/#CT1