[quote]I have Both of these and Model-2-Sprite worked best for me, What i did was load the 3D Model, then extracted the Views/Animations i wanted and saved them as TGA then used Paint.Net which is free to remove the background colour, Just use Magic Wand. Then save as PNG, the whole thing takes about 2 mins.[/quote]
Yes, if you only use downloaded ready to use 3d models, or you have no idea how to use 3d applicaions You could do what @tonycrew said.
I'm using 3ds max, and it can all be done at once with it - and any other 3d application - models, animations, save png's with transparency :)