Your doctor said that. Your question was where to find menus, etc., with that in mind. I'd go with what your doctor says, and here's a source of good information:
American Diabetes Association Home Page - American Diabetes Association
But: let me suggest that a quick trip to amazon.com's book section will give you plenty of cookbooks (which may have menus) and books just for the ADA balanced diet.
Very good stuff.
Amazon.com: american diabetes association cookbook: Books