Re having to use Simply 3D because Lightwave costs too much: Poser 4 and Bryce
4 are affordable and both can animate (but Bryce can't input Poser animations
yet).
http://www.buckrogers.demon.co.uk/temp/ds_tch3b.zip is a (zipped) .AVI
movie that I made with Poser 4 (but not about anything UFO). See
http://www.renderosity.com for information about them and how to buy them and
downlaod correcrtion packages etc and extra props and characters for them.
Poser 4 outputs movies in .AVI mode. It can make characters change their
posture during a movie sequence.
http://www.buckrogers.demon.co.uk/3d/getlwtex.zip is a Windows program that I
wrote that can translate Lightwave models into .OBJ + .MTL mode including
getting the texture mapping right.