Creation and evolution and go hand in hand though (for all you theologists out there).
In the beginning, God created Heaven and Earth: A fairly simple concept for people to grasp without the thinkers that we have today.
On the first day, God said "let there be light": This was before He created night and day. Who says a day in the eyes of God is 24hrs? Why can't it be 2 million years? Time means nothing to Him, it isn't even his concept, it is mans.
So having said that, why can't God create everything in seven days, but those seven days actually spanned a few million years in our terms. So while God created everything, organisms still had to evolve.
I'm not saying that this is what I believe, just another theory to ponder.