Joe, I don't know whether you read that brilliant link that BillD posted a few days ago on misconceptions about evolution? But that link contains an important perspective on the nature of scientific theories too:

"[A] misconception [about the nature of scientific theories] stems from a mix-up between casual and scientific use of the word theory. In everyday language, theory is often used to mean a hunch with little evidential support. Scientific theories, on the other hand, are broad explanations for a wide range of phenomena. In order to be accepted by the scientific community, a theory must be strongly supported by many different lines of evidence. Evolution is a well-supported and broadly accepted scientific theory; it is not 'just' a hunch."

So you can't 'just' dismiss the Theory of Evolution as "just a theory".