Drain the gearbox
Seperate track rod ends from hubs
Undo drop links from botom suspension arms and arms from chassis, this will give you enough play to remove inner cv's.
Prise out inner cv's
Lever out oil seals with screwdriver taking note of whether the seals are flush with the casing or not.
Press in new seals with a piece of wood and hammer making sure they go in evenly. This is assuming the face of the seal is flat. If it has a lip on it you will need a hole in the wood to go over the lip.
Reassemble
Allow about 3 hrs
Don't forget to refill the gearbox!