Hi!
I have upload some code on Google code. It is written in AS2 and i think it is really easy to use. No comment and docs but i have provide some samples. If you wanna take a look here it is:
http://candymandesign.blogspot.com/2008/01/candydimension-v10.html
You will be able to build basic 3d space - cubes, spirals, basic material mapping, change the depths, scale, color transformations... Nothing like Papervision or Sandy - not that complex - but think it is easier to use.
Best
