Well, apparently people on here need to read a few books and get thoughts in order. There seems to have been a lot of standard arguments propogated by the theistic about atheism being some sort of religion. Which is pretty laughable. But before I really get in to responding to just some of the, well, effluent I've seen on here in this thread, I must post this link. Maybe someone else posted it, but I saw nothing. Didn't closely read everything; just skimmed. Anyway:
http://www.amazon.com/Atheists-Bible-Illustrious-Collection-Irreverent/dp/0061349151/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1236716947&sr=8-1
Ok, read that. It's pretty good. Take you half an hour, tops. Then read Richard Dawkins' The God Delusion, Christopher Hitchens' God Is Not Great, and Sam Harris' Letter To A Christian Nation. They are, quite frankly, good reads. They will start opening your eyes to what atheism is. It is not a belief system. It is mutable. I admit that I would believe in god should I presented with compelling evidence. It's, you know, kind of like the scientific method.
As it stands, the bible of the christian faith is a horrid place to look for morals. It has rules for slavery in it. It has rules for selling your daughter into sexual slavery. One of the supposedly uplifting tales shared between christianity, judaism, and islam is one of the most blatant tales of child abuse. A man heard a voice, and led his son to a mountain, bound him, and then began to sacrifice him. God didn't even save the child; it was an angel. Do that today and see if you don't end up in jail. It's not moral. It's not sane. It is absolutely horrific.
Immanuel Kant had a pretty good basis for morality that required no god. In fact, Socrates argued in Plato's Euthyphro that morality is independent of the gods, and this was something like 500 years before christ was supposedly born. Try that one on for size.
Refraining from believing in a god with rules for owning other human beings doesn't make me an amoral person. In fact, I think it might point in the other direction.
There may be no one end all be all work of atheistic morality, but what requirement is there for one? Speak up. Don't give automatic respect for established religion. Question it. It so very often folds in the harsh light of reality. Look at religion like the cave in Socrates' Parable of the Cave, and atheism like the sunshine outside. It's quite refreshing, actually.