its easy up front. rear is more difficult b/c of the ebrake.
that was probably me that you heard the taking rear axle apart thing. the ford dealer here overtightened mine during a free tire rotation with oil change. mistake on my part. i've found 4 broken studs since then. i replaced the front 2. i made them replace the back 2. they decided to take my axle apart in order press them in. they also bent the axle flange in doing so and didn't fix it. so i drive off and of course its obvious. back in it goes for a new axle. anyway, that isn't necessary.
you basically take off the brake system including the rotors. knock the broken studs out and fish them out the back. fish new ones in from behind and line them up so the little ridges are lined up properly. get about 4 or 5 washers and put over the stud on the outside. put the lug nut on and tighten the poop out of it. this will in effect draw the stud into place. it will take some elbow grease but that is how the chilton's says to do it.
its not hard, but its a little time consuming.
the only studs i've found that work are the factory style from ford.