HI Grizzly, soy products are allowed ... Here is an extract of the Food List for Phase 1, note some items have portion limits.
Soy Crumbles - 1/4 cup (2 oz) suggested serving
Soy Nuts - 1/4 cup for a protein snack is suggested serving
Tempeh 1/4 cup suggested serving
Tofu All varieties, 1/2 cup suggested serving
Yuba (Bean Curd or Sheet)
Low-fat plain, vanilla, or sucralose-containing soy milk (4 grams of fat or less per 8 ounce serving). Be sure the product does not contain high fructose corn syrup
Here is a link that will be most helpful as you start....
http://www.3fatchicks.com/forum/showthread.php?t=58182
Welcome Grizzly and Good Luck!