Can you explicitly describe the god you don't believe in?
There are so many definitions and ideas regarding what a god is or isn't -- ranging from mythological deities throwing lighting bolts to new age "we are all one vibrating on a universal consciousness" hippy-dippy type of god. Some embrace a personal god where they receive warm fuzzies while others like a god that flipped the existence switch and walked away. Some look to find god while others realize they themselves are probably god because it's mighty tough to argue against solipsism.
So when you say you have no belief in god, which god is it in which you have no belief? Would you accept a more liberal view of god often using a different name (i.e., universal consciousness)?
What do you specifically mean by god when you declare your atheism?