Hey Tina -
We have a lot of forums you might want to take a look at. First, we have a "Dieting with Obstacles" forum, which includes threads on a variety of physical or mental obstacles to losing weight, including disability. Also, you might want to check out the 100 lb club, for those on their way to losing or who have lost 100 lbs or more.
It will take some time, but if you just focus on sticking with a plan, day after day, you WILL make it. Jump on in and keep posting...can't wait to get to know you better!