Does accepting evolution negate God?

Rotundly not! Evolution is a fact. If you think God exists, better make sure It accounts for reality. If you stopped believing that 2+2=4, you have a problem. If you believe the Earth is flat, you have a problem. If you believe Evolution is a lie, you have a problem.
Did anyone tell you believing in evolution is unchristian? Do not let them lie to you. There are plenty of Christians that know better. When they see God's subtle and wonderful way of letting the world evolve and shape over time, they cannot fail to feel awe. Letting themselves go of the burden of having to interpret the bible literally must be quite a relief for them. No more having to justify a character which seems to encompass the worst feelings of humankind: arrogant, full of vanity, petty, revengeful, arbitrary. It is time for the rest of Christians to acknowledge that parts of the bible speak more of human nature than of God's, and use whatever good moral teachings are left in the book. Everybody would be better off.