A friend of mine who was a strong Christian used to like to coincorporate both views of how humanity came into existence. His idea was that the Bible never really said how long each of those first seven days was. He believed that God created the universe and whatnot but that is not to discount the whole Big Bang theory because the Big Bang was likely the method used. BB dictates that it was millions of years of swirling gases that resulted in the universe and he thinks that could be God's "on the first day." Same with evolution. He likes to think that evolution still happened over the course of the number of years that scientists believe it to have happened but that the Bible refers to that entire process as a "day."

I liked it. Seemed to work for me.