I understand where you're coming from. What I've done is use my own recipes and cut down on the fat, like substituting nonfat sour cream or plain nonfat yogurt for sour cream. I use other spices instead of salt. That's what I like about Sparkpeople. I also eat smaller portions, and more often. I started off exercising easy. Just to get moving, that's the most important thing. You can always do any exercise regime and cut down on the weights; if there's jumping, I walk fast or jog.
The important thing is that you don't have to buy a bunch of special foods and you don't have to buy a bunch of exercise videos. Our local PBS station has a couple of exercise programs, including yoga and Body Electric.
YOU CAN DO THIS! Good luck!