G-AMG, you're destined either for sainthood or defendant-hood...
Seriously, thanks for another addition to our DIY sticky.
I would point out for those wishing to follow this procedure, don't shortcut it. You have to measure the fluid level accurately and at the proper temperature. And cleanliness, and all the other warnings G has supplied.
Also, note that if you have a post 99 MY 722.x transmission, you won't have a drain plug on the converter, so you'll only be able to change out approximately 1/3 of the fluid unless you pick a way to flush out the cooler/converter/cooler lines.
Take care and enjoy the ride,
Greg