I really pity some of these people. Really pity them. Poor Daniel here must have gotten a truly awful education. Not only does he know nothing about evolution, he apparently never learned how to use question marks or when to capitalize words or a lot of basic grammar in general. (I'll presume "exsists" was just a typo and not go after his spelling because he managed to spell everything else correct, and "evolution" should be harder to spell that "exists" and he managed to spell "evolution" correctly.)
Any basic textbook about biology ought to be able to tell you this sort of thing. Expecially how the eye evolved. We actually have quite a good understanding of that. The fact that you're even asking the question tells me that you don't really know anything about the theory of evolution. "The eye is too complex to have evolved!" is undoubtedly one of the Top Ten Arguments Creationists Use Even Though They Have Been Refuted Hundreds Of Times. Even Darwin addressed that one. And I could go through and repeat exactly how the eye could have evolved again, but it's been done so many times before by people much better at explaining it than I am. Really, if you want to know, get yourself a basic biology textbook. Just about any book that addresses evolution can tell you. Just go to a bookstore. If you don't want to spend money on a book, you can find the information online.
For instance:
http://en.wikipedia.org/wiki/Evolution_of_the_eye
Or if you don't want to read, you can find videos explaining it on Youtube. A lot of them fairly simple. For instance:
http://www.youtube.com/watch?v=lEKyqIJkuDQ
But I can understand if you don't want to watch that one because it has Richard Dawkins in it. (I know that quite a lot of religous people will reject anything Dawkins says out of hand, especially after writing The God Delusion.) So here are some others:
http://www.youtube.com/watch?v=Yj_lNQerUJ4
http://www.youtube.com/watch?v=2ybWucMx4W8
http://www.youtube.com/watch?v=ZPcwLyJ0hGU&feature=related
Daniel, I think that a lot of what your problem with the theory of evolution is that you don't understand evolution could create something complex. (As far as books for how we get the theory of evolution explains how you can get complexity from simplicity, I'd recommend The Blind Watchmaker. But, as I said, I know a lot of religous people will dismiss anything Dawkins says immeadiately. Besides, I think that that book would be a bit of a challenge for you at this point, Daniel.) But there are plenty of other books (and websites) that do a perfectly good job of explaining it too.