Well, is your controller synced? (I know it sounds silly and obvious)
If not, Open the battery part on the controller. You'll see a red dot.
But before that, look on your wii, and on the front, you'll see a little port looking thing to the left of your disc slot. Open that, press the red button, then press the red button on your wiimote. Wait a while, and it should sync.
But that's all I can offer.