I use this method to remove the bolt (I used the alternator/PS belt, but had to use some additional force from a philips screwdriver in pushing the belt under itself to make sure there was enough force on that part of the belt that was sliding under so it wouldn't just slip - because that belt's a little shorter than the ideal length for this use)-
You can also try this if you don't have a belt handy -
Then, if the pulley itself doesn't want to come right off, strike it with a rubber mallet until it comes loose (never use anything harder or you can damage the pulley). Depending upon how long the pulley has been there and/or how corroded it may be, you may need to spray a little WD40 around the inside lip (where the bolt was, let it sit a few minutes and then try the rubber mallet.
