re: that video. be wary of that helix drawing technique shown at the beginning.. the half-circle_move_one_end_up then copy/rotating deal isn't actually drawing a helix.. while it might look ok at a glance, don't rely on doing that if accuracy is ever of importance.

That is a really a good question to which I would also like to know the answer!! Installing the plugins for Sketchup will be so advantageous and I am really looking forward to the tutorial for this one!! Hope we get an early soon so that we can make use of it right away!!