Metaseqoia is a spline modeller and there is hamapatch and s patch out there. For a animation program that won't set you back much there is Hash. I also reccomend wings just got it loaded on my machine and it does soem amazing stuff. Amapi and Rhino are great modellers tat are lower cost too. But get wings first it rocks and there is a pdf manual that you can download too.

The wit of a misplaced ex-patriot.
I cheated on my metaphysics exam by looking into the soul of the person next to me.