I have to replace mine soon too. If I can't gain access to my uncle's lift, heres what I'll do.
1. remove rear drive shaft and disconnect front drive shaft from the front axle (when you remove the rear drive shaft, fluid will come out of the transfer case. beware.)
2. put a jack stand under the output shaft of the transfer case.
3. take off 2 nuts that hold the transmission mount to the skid plate (these nuts are located under the skid plate. soak in pb blaster if they have rust on them. if you break the stud you will be replacing a transmission mount as well as a clutch.)
4. drop the skid plate.
5. place a floor jack with a piece of plywood on top of it under the transmission.
6. take jack stand out from transfer case output shaft
7. lower transmission till you can access the top transmission bolts
(ive replaced 2 automatic transmissions before. one in a jeep grand cherokee ***that tranny was a HEAVY sucker!*** and on in a ford explorer. we used a breaker bar with lots of extensions put together to reach these bolts from the back)
8. remove all the bolts and remove the starter!
9. slide transmission out (the transmission may have to be level to come out. it may not come out while tilted downwards)
10. re-install reverse order
*****Find friends to help you!*****
friends can be a great help and youll have someone to chat with