Your local mechanic would be able to change the belt for you, it is not an expensive repair. If you are going to attempt the job yourself ensure you look at the configuration before removing the old belt, I would suggest you draw yourself a picture of the set up before removing the old belt. When you have removed the old belt spin the pulleys to ensure you dont have a noisy one causing the problem. Be sure to have the correct tools before attempting the job. If you don't have the tools then it is not worth attempting the repair yourself.