First look under the hood or on the timing belt cover for the belt routing diagram. If you can't find it, draw a diagram to follow with the new belt.
First you have to remove the AC belt. There is a long bolt sticking up in behind the compressor. Turn that bolt counter-clockwise about ten turns, then loosen the nut in the center of that pulley. The pulley will drop down so you can remove that belt. Later, that's the bolt to draw the pulley back up to tighten the belt. Don't forget to tighten the nut in the center of the pulley.
Below the alternator and above the power steering pump you'll find the tensioner pulley. Hook the box end of a 15mm wrench on the center hex head and pull it forward. Hooking a second box wrench to the finger of the first wrench will give you a lot more leverage. The pulley will go down releasing the tension so the belt can be slid off. The easiest way I found to stick the new belt on is to route it around all of the pulleys except the alternator. As you pull the tensioner forward again, pull the belt up and onto the alternator pulley, then you can release the tension.
Before you start the engine, be sure the belt is fully seated on all of the pulleys. If it's off by one groove on any pulley, it will not center itself. It will shred instead.