its pretty easy,
here is a link to a full axel overhaul which includes removing front wheel bearings, so it should have all the pics and info you need.
http://www.birfield.com/~morgan/tech/axle/index.html
you will need a 54mm hub nut socket, mine cost $22 call a 4wd specialist not a tool shop.
the hardest part is getting the bearing seats out without a press, you can do it ok but take your time and slowly tap it out using every edge so it comes out straight. same thing to put it back in.
Ideally you use a torque wrench to tighten your bearings, i didnt the first time and it wasnt right. I havent got my manual here to check the correct torque but will post it tonight if no one else does.
if you dont have a torque wrench then you can get away without it, by doing the maths. if the torque needs to be 50Nm then get a 1m bar (total length from center of hub nut socket to end of bar and hang 5kg (6kg if 60Nm etc etc) of weight off it at its very tip whilst the bar is horizontal - its not 100% accurate because of the weight of the bar etc, but it should be alot better than going by hand.
You might (like me) find that your king pin bearings are worth replacing while your in there - mine were completely shagged.
You might also decide to replace your inner axel seal. some would debate this saying if it aint broke dont fix it, but seeing as your pulling your hub apart to get to the rear bearing I would hang the extra $20 and replace them so you know the whole fron thub is pretty well renewed. all up the kit to do my front bearins, kingpin bearings and full seal kit inc gaskets etc was about $110.