I just finished reading the excellent Book of Atheist Spirituality by André Comte-Sponville.
He defines God as a supernatural creator deity who is fully transcendent. He bases atheist spirituality on the awareness of humanity, love and truth in the universe. He makes an elegant and impassioned argument for immanence and the oceanic feeling as the basis of atheist spirituality.
Personally I have long since ceased to see the Divine/Deities as a Person or Persons, and certainly not as omnipotent, omniscient, transcendent, or creating the universe. Occasionally one has flashes of communion with the immanent energy, but these are not the same as communication.
It's also worth reading the excellent Richard Holloway, who has reached much the same conclusions from within the Christian tradition.