Livelovelaugh – I apologize. I just read your post more carefully and realized that you weren’t positing that humans and animals share a common ancestor. In terms of what you are positing – that some aspects of evolution may not be against the Torah – I don’t know enough about the topic to be able to say, but I would think that it could be a possibility.
In any case, when Frum people come out against evolution, I don’t think that’s what they are talking about. They are talking about the idea that people come from monkeys. In psychology, evolution is brought in in order to make a point that is against the Torah. They are trying to explain that people are the way they are simply because of some kind of evolution process. Basically, they are trying to take G-d out of the picture.
For example, there is a theory that the reason why people like to be nice to other people has to do with evolution and the fact that those people who were nice to others were more likely to survive. This is as opposed to saying that people try to be nice because we are not like animals and we have a tzelem Elokim.