when I click to take a photo it makes a noise like it's going to take a picture but it won't actually take a picture

First thing I would do is reset the camera. This is a fairly easy procedure which involves either going into your setup menu and choosing "reset" (or intialize), holding down the menu key for 5 seconds, or, removing the batteries for a few minutes. It may be that the firmware loading got corrupted and the camera just needs to be "rebooted," which is something that turning it on/off won't accomplish. But after which, you should have the camera reset to factory default settings.

Another tip is to go to Canon's website and look for firmware updates. Download and install them.

Chances are, however, that if you need to have it repaired, understand that the average cost of a camera repair is around $180. As such, it may cost more to repair than it is really worth. The rule of thumb is that if the estimate for repair is north of 50% what you paid for it, you're better off taking that money and buying a newer and upgraded model.

This may solve the problem. But the simple fact is that this camera is long in the tooth by now. I'd be looking to replace it with a nice 6 MP camera. You can get em pretty cheap.