Check the pimp thread - I did the same thing Windrider did with jack stands and a padded 2x4. (essentially) Got some screen material for the back door and I'm good to go. I think the pics are on page 20, toward the end of the thread.
Definitely works nicely for us. I think Campnqueen suggested putting some pipe wrap or some swim noodles on the corner edges to avoid slicing the legs open after a night of adult beverages.
...works like a charm!