Hello Lori and welcome to fitday. This is a great site, you might want to check out the 100+ club, it's a great group and a good place to check into for daily support and inspiration.
On the exercise front I recently bought a workout DVD called "Walk at Home with Leslie Sansone". It's very basic, mostly walking to a beat and the occasional move that is slightly more than that (which you can skip and just walk through if you want). What I like most about it is that she walks 5 miles, and you can chose to walk all of them or just one at a time. The single miles are 12 minutes each, which is maybe the shortest workout I've ever done. I think in terms of workout videos that particular one would be a great way to ease into it.
Good luck honey, we're all pulling for you here at the forum.
Starting weight: 244.6 lbs. 10/01/09
Pounds lost: 80.6 lbs
Current weight: 164 lbs
Goal weight: 120 lbs
Weight to go: 44 lbs
Goal Date: 1/1/13