If you do a search for the spinach and sunflower seed diet on this site, you'll find five posts (labeled Part 1 through Part 5) that are quite lengthy and discuss all the details of the diet. They also have recommendations for food brands, recipes, where to find products, etc.
Poor Cfromutah has had to explain this numerous times, so I thought I'd try to save him some work. ;-) By reading those posts, you'll also get a feel for how others have responded to this diet. Good luck!