UPDATE (2018) Ultimate Collection patch also came out on Origin
Just in case anyone stumbles on this looking to do stuff, its an old thread but some things have changed since they came out with sims 4. the blender 2.76b (32) the version I use when combined with the same tools as required for sims 4 works for sims 2 when wanting to import and export. you still have to make new bones (if your doing objects) in milkshape. but you can animate those bones for models or for objects once they are made in blender.
a few resources (off site) because its better organized for the specific task of animating objects and sims