right side axle/diff seal

hello all, newbie here...
I just bought a 1995 silverado, ext cab 4x4. It has a leaky axle seal on right side. Just wondering how much of a pain in the pickle it is gonna be to replace. Do I have to dis-connect the ball-joint, etc, or can I sneek the axle out without going through all that? How is the bolt flange removed? Any "special" tools needed to do this job?
Thanks in advance...