So for Christmas I received an Apple wireless keyboard to use with my macbook. All the regular keys are working just fine, but there is something wrong with the function keys. For example, the exposé dashboard and brightness keys just dont work, and when I press the key with the fast forward picture on it, it goes into exposé mode. Not even the sound buttons are working they are used as dashboard and clear desktop. Can someone tell me how-to make the functions what they are supposed to be as shown on the keyboard?