I want to change the water pump on my car

This should be what you are looking for. http://www.autozone.com/az/cds/en_us/0900823d/80/19/84/57/0900823d80198457/repairInfoPages.htm

not fun to replace you will have to remove your timing setup as well as your motor mount and timing cover it is in the front you can see it when looking down toward the base of the engine from the top tucked under intake manifold don't forget to replace your hoses(cheap Insurance against future failures)

I have a 2002 dodge neon need to know how to change water pump