shadows...

Does vrml support shadow casting? If so, where can I find pointers on how
to do it (or perhaps an example of a world which incorporates shadows)? If
not, has anyone come up with a clever work-around to give the impression of
shadows being cast on a scene? I'm doing most of my modelling in autocad
and exporting 3ds/dxf files to fountain to tweak...

thanks in advance for sny help you can offer -
david richard
[email protected]