Holy crap, I can actually help for once!
I was looking into the same thing for my Android tablet (before it decided to say HI! to the floor and broke the screen). What I wanted to use was a simple program called PAPER but, sadly, it's only available for Apple products (and FREE).
Lifehacker did a piece on the 5 best drawing apps for tablets: http://lifehacker.com/5913489/five-best ... awing-apps