Well I've written down my full answer in the "Is There True Love?" thread (I think that's it). So I'll just write down the abridged version. Yes and no. The "soul" is actually split into two different factors, biological and adaption. Biological is basically your instincts, reproducing, eating, breathing, stuff like that. Adaption is the part that takes the longest to develop, it's a form of lesser "personality".
Each person is born with an empty slate. Born only with biological functions. What the biological function does here is kickstart the brain into absorbing everything around it. Depending on what it absorbs, the adaption part can be extremely different. Shortly after the brain has adapted moderate information and the adaption starts to form, the biological merges with the adaption.
At this point, what some would refer to as a personality is formed. Depending on exactly what they absorbed, it can change radically. The biological part goads the adaption part to do things for it with things like pleasure and pain. To put things in short, your subconscious is your adaption part, your needs (not wants) is your biological part, and your mind is your personality: a combination of both.
So that brings me to my point; is there a soul? Well, depending on what you view a soul as, yes or no. If you think of a soul as literally a white ghosty embodiment of the person, then probably no. If you think of a soul as the personalty, then yes. Each personality is unique from anyone else on the planet, and I think that a soul is the embodiment of that unique soul, religious or not.