Well, I'll give you evidence for both. Lets start out with evolution.
• Evolution is a theory, which means that it is backed up by evidence. Evolution claims that the oldest and less complex animals are located at the bottom of sedimentary rock layers. Evolution also claims that the "newest" animals are located on the top of sedimentary rock layers. Mammals and birds for example. Never do we see mammals with amphibians in the oldest rock layers. This is exactly what evolution claims, and it is observable, testable, evidence.
• Mutations in people and other animals happen all the time. For example, some animals can be born albino. Others can have different hair or skin colors. It is these small changes that lead to big changes over time. Its like seeing a child grow up. The child looks the same every day, but over years, the child changes.
• Natural selection is observable. Remember what killed off the Dodos? We see this in any habitable island, for example. In the Galapagos Islands, we see very unique animals. These creatures have different body features that make them survive in their habitats. You may say that they just adapted, but what happens when their 'adaptations' adapt even more? You get a new species of animals. The same goes for Australia and Madagascar. Evolution and plate tectonics, both theories, explain why animals in Australia and Madagascar are the way they are as well as in other parts of the world.
• Evolution doesn't claim that animals can turn into others instantaneously. For example, a poodle cannot have baby lizards. Evolution claims that, through natural selection, a population of animals can become different in order to survive. I'll use the primitive ape--human example. Through mutations, some primitive ape started to walk on two feet in the forests of Africa. However, as geology suggests, the Sahara desert was becoming larger. Forests turned to grasslands. The primitive apes that started to walk on two legs, found that beneficial. Why? Well, because when you can stand up in tall grass, you can see danger coming in. So, because this was beneficial, these primitive apes survived and changed even more through natural selection. We also know this happened because its happening right now. The Sahara desert is becoming larger every year. Just recently, paleontologists discovered an ancient cemetery in the Sahara, claiming that people once lived there while it was green. http://news.nationalgeographic.com/news/2008/08/080814-sereno-sahara-missions.html Additionally, using DNA, scientists have traced the human origin to Africa, meaning that all humans descended from Africa. There's even fossils to show, just like there are fossils that show the transition between wolf-like animal to whale.
You just read some few pieces of evidence for evolution (there are many, many more).
Now, as archaeology says, people have believed in gods for, what seems like forever. The Mayans had them, the Aztecs, the Indians, the Romans, the Greeks and just about every other region on Earth, have people believing in one or more gods. As you can see, there is not one piece of evidence for any of these gods. Some have ended in mythology, while others, people still continue to believe in.
Still, I think that you can accept the theory of evolution just like the theory of atoms, cells, and gravity, AND still believe in a god. I don't, but apparently you can do both. Visit: http://godisimaginary.com/ if you have any doubts.