I also do believe in evolution and reject the Creation theory in Genesis. If you took that story literally, you would find that God creates man twice and the Sumerian legend of creation (which the Hebrews probably borrowed) is VERY similar to the Bible, as we are both made from the ground as it says.

God is the life process itself.....cannot be contained. God is too much for our limited minds to comprehend...as their are infinite universes and inifinite dimensions. Think of God as just pure thought and energy. There is no limit to your mind so God is limitless. The old saying in the Bible "which temple can hold God!?"

So you can be an Atheist and be God at the same time. A lot of people get the concept that if you are an Atheist, than you are a horrible person. So far from the truth. It's how you treat people, not what you simply believe that God looks at.