First start off by jacking the car up on the passenger side and putting a stand under it. Then remove the wheel and wheel well cover.
Then place the jack under the engine with a block of wood or something soft so you dont damage the oil pan.
Remove the passenger side engine mount. 3 top bolts and one side bolt.
Remove the engine mount bracket three 15mm bolts they are really long and you have to jack the engine up and down and wiggle it around to get it out. Remove the crank pulley. Then remove the front of the timing cover using an 8mm socket.
MAKE SURE YOU LINE UP YOUR TIMING MARKS BEFORE REMOVING THE BELT!! The easiest way to keep the timing marks in sync is by putting cylinder 1 piston at TDC. Now you remove the idler pulley and tensioner pulley and bracket I belive they are two 12mm bolts for the backet also remove the automatic tensioner. If you are doing the water pump you have to remove the back of the timing cover which means you need to take off the cam gears.
Remove the water pump and get some fine grit sand paper and smooth and roughness in the surface where the water pump was then clean it with alcohol or parts cleaner.
Place the gasket on the back of the water pump and install it using rtv on the end of the water pump bolts because if you dont they could leak.
Reinstall the back timing cover and put the tensioner pulley and backet back on and put the idle pulley back on it should look like this.
If you didn't buy a new tensioner you need to compress it and put the pin through it. Put it in position and tighten the bolts for it finger tight.
Install the timing belt making sure all the timing marks are aligned. The crank has an arrow and the matching one is on the oil pump you can see it clearly the cams timing marks match each other to the middle. You actually need to put the crank sprocket 1/2 a tooth
Behind TDC. When you put the belt back on over everything, the crank sprocket should adjust itself by the tension or lack of tension on the belt at this point. The tensioner will tighten the belt and you need someone or your other arm to apply pressure to the bottom of the automatic tensioner and then tighten it at the same time. When everything is tightened down the pin should slide out of the tensioner with ease if not you didn't do it right try again. If it is perfect then rotate the crank twice and check your timing marks if all is well replace the front timing cover and put your bracket and motor mount back on and you better hope you lined up the marks correctly.