On the Homepage of CureZone in the left hand column, you find the lemonde diet. That page gives a good idea of what you have to do and what to buy.
I guess it will result in weight loss for many but it is first and for all a very good start to cleanse the body of all kinds of toxins.
Also, in the bowelcleanse group at Yahoo, you'll find a copy of The Master Cleanse Book in the files (under Diane Trudeau).