Its easy, Jack the car up and put some car stands under it.. have a bit of a look. Unbolt 1/2 of the tail shaft first... then unbolt the flanges either side of the diff (there will be 5 bolts)
Once you do this, Look at the back of the diff, and there will be 2 bolts, unbolt them. The diff will still sit in as there is 2 more bolts supporting it up the front. Un-do this bolts, but dont completly undo them, then if your strong enough, hold the diff into place with one hand, and undo the bolts with the other hand, and slide if foward. The diff will then come out... and your done. Hope this helps
Its really easy
Dayne