Will Weigh****chers help me loose again?

I had an open rny Aug. 2001. Lost 160 but have gained 100 back. Was in auto wreck 2 yrs ago and since then the weight has poured on. I can't exercise and with bad knees from before and now painful back it makes me want to eat more. In desperation I joined Weigh****chers 2 weeks ago and I'm trying to follow the "Core Plan". Anyone else on Weigh****chers? I've really been trying to follow it but I'm hungry most of the time HELP!