I did CS last year. I started at 105kg and a week and a half into it, I'd lost 5kg. With CS, you really ahve to be strict with yourself. I found that I was doing great for the first two weeks, but once I'd gone out for tea and have snitzle and chips (i know, I know...naughty me), I found it harder and harder to stick to. I didn't really like the shakes, though the meal bars are nice. There's also a tablet that you can get in the CS range too, but I forget what it's called. It has chromium init, which helps stop sweets cravings, and I think it's an appetite suppressant/metabolism speeder-upper.
My older sister also used the program, and lost 10kg in 8 weeks. And she's since lost a little more, andkept it off for over 2 years.
My tips, are keep lost of cut up vegies in the fridge, stock up on diet jelly, and as I said before, be strict on yourself. Chuck in a walk everyday, and the wieght will fall off, I'm sure
Good luck with it
. . . when the rich wage war . . . it's the poor who die . . .