upper/lower ball joints on a 95 explorer

I go to bellaire high school and i am an auto mechanics student. i need to know how to R/R upper and lower ball joints. if anyone knows how to do it or have any picture diagrams please send them to me. thank you

You need to get yourself a balljoint press tool to change them, otherwise you'll do damage to the new ones and have trouble removing the old ones. Its a "C" clamp type tool that pushes them out and pushes the new ones in. It not to hard if you have all the tools. If you can't get a hold of them...better to take it in.