I've added another article to my Shockwave3D Developer's Guide. This one is about Bezier Curves, and includes a simple, but really powerful, little Lingo function. The Bezier function is so elegant in its simplicity and power, that I thought it deserved an article unto itself.
Also on that page is an example of its use to create a 3D flythrough of four waypoints in the Sacraments sequel I'm tinkering on. Here's a screenie: