Remove old CV boot with razor. Place jack under the A arm in just the right spot. Would also recommend additional stands for stability. Remove the four bolts holding the ball joint in place on the bottom. Carefully remove the snap ring(s). Swing the ball joint and rotor out of the way and pull the CV joint out. It should slide out with a little persuasion and wiggling. There is no need to disassemble the brakes.

This should get you started. Sorry for the complete lack of details on this post.