Evolution says nothing one way or the other about whether there could possibly be a God. That is to say zero, zip, nada.
Anyone who believes that it does, does not understand the theory of evolution. In fact talk.origins even has a [link|http://www.talkorigins.org/faqs/faq-god.html|FAQ] about this.
Anyone who claims that it does either needs to learn more about evolution, or should stop trying to misrepresent science to serve their own agendas.
Cheers,
Ben