I know Mike has done it, but he's a little fella ;-)
I have a copy--I watched about 10 minutes of the first disk--even a couple hundred pounds lighter now I can't do it.
Back when I was 400+, no freaking way. Perhaps you're in better shape than I was, but walking 50ft. was about the extent of what I could manage w/o gasping for breath.
I would really suggest walking as a good way to start out. Perhaps some lifting if you have the equipment available. Whatever you do, go slow and don't hurt yourself.
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.