not to be mean, but I doubt you'll get an android working...
I was going to build one myself up until the other day when this little bugger popped into my head.
you can make the thing look like a person, but what allows us to move? Balance. how do you balance an object of human proportions easily? the answer is you don't.
now, unless you have some micro motors that can wiggle the ankle back and forth enough to keep the system stable, you will fall on your side as soon as you try to take the first step.
I'm not trying to discourage you, but I don't want to see you wasting time and money on a project like an android only to be stopped by a tiny little problem at the very end. If you do figure out how to balance the thing while walking or running, please, by all means let me know. I would love to build one myself, and then we can make them box...lol.