Slim Fast shakes good or bad plan? + Exercise questions?

On October 24th, 2010 I decided to turn my life around. I was obese, depressed, and was lacking in self confidence. Now, as of December 31st, 2010 I am over 40 pounds lighter; having dropped 6 pant sizes, and two shirt sizes- I will do whatever it takes to not get back to where i was. How did I do it you might ask? - Hardwork, determination, and moral support. (and some other stuff) lol - if you wanna ask me specifically how i lost it or need some motivation dont be afraid to ask-(but send it in an EMAIl!!!) thats how i respond