I agree with Dig's post. I am a tried and true athiest and had huge problems with the language used in the steps. However, I kept coming (with some relapses in between) and eventually decided that the group would be my higher power. There are people there who have succeeded in staying sober for as long as I've been alive (or close). Who am I to argue with that? It took me a long time but I now feel like I'm among people who understand what I am going through. I feel a sense of calm at meetings.
I do also openly discuss that I am an athiest and haven't had any lectures. I'm sure there are those who don't approve but they haven't said anything. I do the same when they talk about how much God has helped them. To each their own. Like they say "take what you like and leave the rest".
With that being said, there are some meetings which have a more religious overtone than others. I just choose a different meeting that suits my personality/needs, etc.