well probably my advice to you is to simply forget it. shockwave 3d is largely for programmers only - I'd just try to get to grips with a 3d program such as 3d max.
But designers do use shockwave 3d and good luck to them. Your best bet would be to take a look at karl sigiscars behaviors library which is specially designed for designers. The url is in my links page. You could also maybe look at nasigoreng which is a good learners site
generally for you should be able to get shockwave to work with simple interactive movements like mousemoves. The macromedia behaviors effects have both a trigger and an effect. First apply an effect and then apply for trigger - you should then be able to assign that trigger to an effect.
HAIRYBOBBY - why didn't I choose a really cool name like the vulcanpimp
new vector shape behaviors here