I think you can be a Christian, and believe in the Christian God, Jesus etc but can be sceptical of the writings in the bible as they were just written by people.

Heaven knows about the United States, but in the UK I think that's the majority form of Christianity: most Christians I know don't believe in creationism, or (another fundamentalist touchstone) Satan as an actual being (as opposed to a symbol of the evil in every human).

Peter

Edit: if the word "evil" in itself seems a bit superstitious and metaphysical, all I mean by it is "anti-social tendencies"; that is, tendencies which if expressed would be detrimental to society.