After you get the tire and wheel removed you will need to remove the bolts holding the axle in, get them out and slide the axle shaft out. Then unscrew the axle nut and remove the lock washer and spacer, remove inner nut, remove outer bearing.
At this point the drum may or may not come off. If it doesn't you will need a small screw driver to back off the brakes on the self adjusters. There will be a slot in the backing plate and there will be a small ring gear looking thing and you will need to turn it with the flat head. This takes a while but when you get the adjuster backed off the shoes should allow the drum to come off. /forums/images/graemlins/thumb.gif