Take the wheel off undo the hub nut once undone give it a whack with a leather mallet not a hammer just so the cv joint moves in and out like sexy time, take the nut of the balljoint use a long bar to prize the arm down and the ball joint will come out the hub pull the hub towards you but hold the cv joint from behind so it comes out then push the hub to the side and u will have your driveshaft and cv joint exposed, you need to be careful tho because u can easily pull the driveshaft out the gearbox and u dont want that its mess and smells of cat piss. Once uve done that cut off the old cv boot and clear away the dirty grease and where the driveshaft goes into the cv joint there will be a circlip. Use long nose pliers to squeeze the open end together and use that mallet again to knock the cv off the shaft. Now jus stick the new one on it and jobs a good un. Enjoy. If your not mechanically minded then invite some people to come watch it will be amusing. Goodluck.