DON'T BUY GAMESPACE!!! Frank is right, the bones "currently" have no weight map support and are extremely....well....horible, I love trueSpace, but I don't animate in it. When 7.5 comes out I might, but for now Lightwave is the way..if you are short on cash then Blender is better in some way and worse in others, but it is free("ventilator" has a great plugin for it).

Everybody Poops.
here are some tutorials I made.
http://www.acknexturk.com/blender/