changing the cv shaft is simple, if you have any mechanical ability..
1. take off the tire.
2. you will nedd a big socket to loosen the nut on the hub, and a breaker bar.
3. once the nut is off, tap it with a hammer, to break it free...then pull rotor towards you and slide the cv, out the hole.
4. use a big screw driver, or a prie bar and break the cv away from the tranny.
putting it in make sure it slides all the way into the tranny, once its lined up( the splines on the cv to the splines on the tranny you may need to take a piece of wood to the other end of the cv ang hit it with a hammer to make sure its all the way in the tranny, the put it in the rotor, tighten the nut really tight, use an impact or a breaker bar to make sure, bend the edge of the nut in the grove youll see what im talking about, when your taking it off. and that it.....