This one ^^ I don't know when they swapped over to the later style with the cable going into the drum, I know that is what is fitted to TD5's. But earlier ones is all external activating a lever which are much easier to change. they are very obviously different so a quick picture of the back of the drum posted up here and we will be able to tell you which style you have.
I also would not be too worried about attempting this yourself even if you are not that comfortable with tools and working on the vehicle yourself on the scale of jobs this is a fairly easy beginners job to tackle.
To remove the rear prop, the chock the front wheels, release the handbrake
, jack one of the rear wheels just off the ground so it can spin freely. This allows the prop to be spun around by spinning the wheel to allow access to the bolts you need to remove. Using an open ended 9/16 spanned remove the four nuts pictured below.
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once these four nuts are removed the propshaft can be compressed and slid off the studs and either put to the side or tied up to the chassis. If you are feeling very adventurous you can remove it from the axle end using two spanners and the same method and removed it out of the way completely. This will reveal a small cross head retaining screw that you undo allowing the handbrake drum to be removed. Once you are at this stage you can follow the steps here:
LINK which details how to replace the cable on a handbrake system where the cable does into the drum. Although this write up removes the handbrake lever I would not bother and although it is a little fiddly you can feed it through from the underside of the vehicle.