Ouch. Hard to explain just witch one of those things are it. On the side of your engine with your belt and pullys. The middle is your crank, one on top shoul be the alternator, one in back a tension pully and the biggest one left shoul be the water pump. Buy the new one first (can get your core chagr back later when you return the old on) that will help you see what the front looks like. If your water pump works internaly from the crank you may need to take it in after you know what it looks like and know it is powered by your belt it is real simple, except that it is impossible to reach on a front wheel drive. You may be able to attack it from above, you may be able to attack from below, or you may be able to take off the passanger tire and go through the middle. If you cannot get to it then you may have to take it in. Get a little closer to seeing what you are up against and write back.