Selling one's body to medical science?

OK, here’s the deal: I’m po’ (“poor,” for those of you up North). I was curious about how to go about selling my body to medical science and how much money I’d get for it.
I know that there are lots of terms and conditions for this, there was a lawsuit alleging that a person who sold his body to science violated his contract when he had a tooth extracted without permission (sorry, can’t find the link), and the defendant/donator lost.

So. I’d like to get some extra money, and I can’t sell my body while I’m alive, and I won’t need it when I’m dead. Well, I could, but it wouldn’t get me much. Where do I go? What do I do?