Evolution is a theory, not fact.
perhaps zeev should add "no relgion" to the name of this group as well, but i'll respond.
you can believe what you want, of course. just let it be said that there's no place in the world where you can study the biological sciences (at least beyond high school) or medicine and have evolution presented as anything other than fact. (i.e. scientific theory well proved by all of the available evidence.) evidence, evidence, evidence. that's what validates a scientific theory: elaborating the theory, making predictions from it, and then finding those predictions validated through new evidence. for example, most recently, from the parsing of the genome of various species, where you can find individual genes similar among various species and reconstruct their philogenies based on hypothesized sequences of small, incremental changes in a (no longer present) family tree.
nevertheless, the question of whether evolution is an "acceptable scientific theory" or not is merely a political and religious issue. it has no scientific merit.
it took far more faith to believe that all we see in the universe (including the incredible complexity of life) evolved by random chance out of nothing.
evolution says nothing about where life began, or how life arose from non-life, much less about the creation of the universe, etc. its merely the theory of how the complexity of species arose. the randomness, as we can now directly point to in the genomes of various organisms, being changes in one or two or a small number of base pairs ("flipping bits") in the coding of various genes - or other such "errors" in transcription - that subtly change them. subtle changes in the genes - random, if you will - will generally be deadly. this happens all the time; we see lots of genetic diseases. however, sometimes they're not. out of trillions of such experiments, run over and over again, the results are selected - natural selection, survival of the fittest. but its not all just incremental change: changing a gene merely changes the description of the protein that it encodes. the actual change in the protein does not have to be subtle, since a small change can cause it to fold in a completely differnet way.
etc.