Feel free to skip any of the reading/steps if you're a seasoned pro, I'm gearing this towards a new but educated DIYer. These are the general steps, I'll go into my story, the gotchas and some more tips at the end:
1) Remove the rear wheels
2) Remove the top locking nut from the stabilizer link
3) Remove the bottom (Flange nut) - ONLY IF REPLACING END LINK
4) Remove the flange bolts
5) Remove Stabilizer bar
6) Reinstall stabilizer bar
7) Tighten bolts
8) Reinstall wheels
9) Lower vehicle
10) Tighten all lugs to 80 ft lb in a star pattern
11) Re-tighten stabilizer connectors to appropriate torque
12) "Drive around for 5 minutes" . . . do 5 minutes, then do a 30-60 minute trip and check again
13) Re-tighten stabilizer connectors to appropriate torque
I started out with the flange bolts and sheared one off with a normal hand ratchet;I'd suggest using penetrating oil and replace the flange bolts if they're at all rusted before going in seriously for a replacement. It cost me $50 to have the bolt drilled out . . . learn from my mistakes.
Proper installation says to jack the vehicle up, but I believe another user did this without putting the vehicle in the air, AND it does appear to be easier to re-thread the end links with at least some pressure on the suspension. It's up to you, but it's rather cumbersome to get around the muffler if the end links are not in perfect shape.
My end links were pretty much destroyed to start with. Corrosion had done in the already thin wall of the hex end of the bolts, and torqueing on them made them unusable. On the first end link, I was able to get the stuck link off by immobilizing it with some needle-nosed vice grips. I was able to bite into the "head" (a rib actually) of it near the bushing/sheathing. I wasn't so lucky on the second one and was forced to use a hacksaw to take it off.