... what you wan't exactly... but if you want a 3D animation design package, Discreets 3Ds Max is one of the best ones. It's used in industry. You have to build your own 3D objects.
I have it and love it!
Mind you it'll set you back about £4000, but...
if you have a univeristy near you, they probably have it installed on their machines. You could pop in and find out about getting access to their labs or learning resources centre.