I changed mine last year.. Here is what I remember...
1. Remove driveshaft
2. remove Y-pipe (exhaust just after the manifolds) Be extra caerful with the 4-O2 sensors on the Y-pipe.
3. remove the front driveshaft
4. unhook the vent tube on top of the t-case (just a rubber hose, pull it off)
5. Unbolt t-case and separate from tranny...
Its a pretty straight forward job but you will need a gasket that goes between the case and tranny, its a dealer only item.. I didnt torque mine just tightened the crap out of the bolts.. I also cant remember what I filled it with. I did a search on here and found the correct fluid.
Hope this helps. This job would be easy if you have a lift but I just jacked it up as high as I could get it and went to town. Two people is a must..
Jeremy