i've actually got a tutorial series that touches on this but i am planning on expanding it but here is the coles-notes that should get you started.
would you mind sharing a link to that tutorial, please.
On a related note: if one was to draw a travelled path, would you recommend using vectrosity on it's own or perhaps an easier setup drawing the path with SWS and using the waypoints as vectrosity splinepoints in a MakeSpline?
I say easier even though I have no clue how to scipt either way, but see the second as most apparent, following the ease of drawing paths with SWS.