I recently learned a very valuable lesson - you can rebuild your own, not working, alternator for about 15 dollars worth of parts. To make a long story short, I was taking a class in basic electronics in which our instructor demonstrated this. There are links for the same all over the web. The hardest part would be making sure you're looking at the same alternator as yours, although its surprising how little difference there is for the rebuild. below are a couple of sample links.