Some Starting Exercises for the REALLY big-boned...

Hi All,
For all you success stories out there, what did you start with exercise-wise? Please don't say "walking" cause I know that one already and will be doing that, but I wanted to expand and get a full workout that isn't going to throw my back out and have me rolling all over the floor like a beached whale (lol). I got an exercise ball yesterday and the DVD that came with it....so NOT for the beginner! If anyone has any great beginner ideas for the exercise ball too, that would be great. I want to start slow so as to not injure myself, but I'm so large right now I have no idea what to do besides walking. Any suggesstions appreciated. Peace Out....

J
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