Try to get hold of a workshop manual; failing that, a Chiltons or Haynes manual for that car. I've just checked the Haynes, and it does show the Alternator replacement in some detail.
A couple of major hints; firstly, you get much better access going in through the passenger wheel-well. Take the wheel off, and the plastic shield between the wheel-well and the engine compartment, and the alternator will be staring you in the face.
Secondly, the alternator sits on top of the A/C Compressor. You'll think you can work around it, but you can't. It has to be moved, so you can get to the alternator bolt correctly. Undo the four compressor bolts, and move the compressor out of the way - do NOT disconnect any lines to the compressor, or you'll lose all refrigerant, the ozone layer will shrink a little, and somewhere, a small kitten will die (OK, not sure about the kitten).