Training Application Help

Training Application Help

Currently we have an application that is used for training purposes. There are (2) main forms and (2) views:

Forms
  1. Add Courses
  2. Course Registration
Views
  1. View Available Courses (includes a custom action to register for course that is sent to the course registration form)
  2. View My Courses (based on course registration form, but filtered by status == "registered" and zoho.loginuserid)
I think this is a simple problem, but we are trying to get the View Available Courses to only show the courses which haven't already been registered by the user. Can anyone this of any ideas that might help?