[support] How to have different Primary Links on different sections

Hello, I'm running Drupal 4.7.4 on this site: http://beta.menashalibrary.org/. I'm going to have three distinct areas of the site. The main part, teens, and kids. For teens and kids, I've got the module Sections setup. So, I'll have a completely different theme for each area. What I'd also like to do, is to have different Primary Links for each of these areas. Is this possible? If so, how? - jody