Attached Link: http://www.renderosity.com/viewed.ez?galleryid=459962&Start=1&Artist=Lyrra&ByArtist=Yes

well you might want to consider rendering the figures, saving as a tif and applying to a flat plane. THe alpha channel should knock out the background, and give you a 'cardboard cutout'. Just be careful of camera angles. Or, assemble the whole mess in Photoshop, and make the shadows by hand. In my picture 'spaceport' I rendered out most of the figures separately. Really helps with larger renders.