Again I'm a little late getting into things here.
You are asking for proof that evolution is a fact, which is an honest if ill defined question. If you require proof you need to define the type of proof required. Evolution is a very large field that spans ancient and modern evidences, extinct and extant organisms, direct and indirect observations, and a fair number of interrelated scientific disciplines. What part of that do you want 'proof' of and what observations would satisfy your question?
BTW, the theory of evolution (the SToE) as a theory, and like every other theory, does not rely on 'proof' but on the accumulation of verified evidences.
But anyway, please state your requirement for proof as specifically as possible and I'll try to answer it as well as I can.
I want to see step-by-step pictures of the Gradual Changes from say, a bird to a dinosuar or vice versa that eolutionsts is always talking about.