As everyone said, the job is almost embarassingly simple. I did it in less than an hour last week (although I haven't re-sealed the box yet; need to pressurize the system and make sure everything's good first). That included removing the glovebox innards, taking pictures, and cleaning things up.
I took pictures of the job, and as soon as time allows, I'm going to put them together with a small write-up...now that I have a digital camera, I'm going to try and do this for every repair task I go through. Might help someone out someday