If you are looking for a "diet", I would have to agree and go with Weight Watchers. The points system is very easy to follow, especially if you get the calculator you can carry around with you. All you do is key in the nutritional info thats on the back of a package as it prompts you and it gives you how many points that particular food is. I really like the calculator.
After I graduated college I lost 20 lbs. Half I lost by doing Weight Watchers, but the other half I lost by working out with light weights. I was going to the local YMCA and there was a class called "Toning and Strengthing For Women" or something like that. The instructor told me that aerobic exercise is necessary, but unless you are building muscle you will never get your metabolism to speed up. Therefore if you stop the aerobic exercise or diet, the weight comes back. SHE WAS SO RIGHT. I was able to start losing weight again that dieting wasn't taking off.
So that's my recommendation. Add light (b/t 5 to 15 pounds, depending on what you can handle) weights to your workout in some way. By building muscle, it will speed up your metabolism, and allow you more calories by food (so you're not straving yourself to death), but burn them off, too!