I have my palms facing me, not sure which way it is. But I bend at my knees slighty like I'm prepping for a Dead lift. It seemed like if you did them with your palm facing up to the ceiling/away from you, it would be some new kind of weird bicep thing that if people saw you doing would catch on and become the new best awesomest Bicep Curl.
http://www.t-nation.com/readTopic.d...D82631B213B4C348822.hydra?id=1205880&pageNo=0
There is a picture just a few post down, that is how I do them and you can see the fellows hand position. Poster name with the picture is Nate Dawg, not too far down. Just slowly scroll down and you'll see it.