I purchased one of the training DVDs from VASST on Sony Vegas Movie Studio Platinum. I have recently started going through the lessons and find the content to be very informative (I'm relatively new to this.) Their content covers a lot of material about SMS including DVD Architect Studio.
Glad to hear you liked it, Steve. We put quite a bit into that.
FWIW, almost all of that project was done in VMS, we wanted to see if we could pull off a nearly 4 hour finished timeline, with about 12 hours of originating footage. (2 cams x 6 hours)