>Question 1. > The site has a home page and five major subsections, each with several child pages. I intend to work up good meta descriptions and keywords for the major subsections. Should that also be done for every individual page? Yes - every page should have it's own, individualized keywords and description.
>Question 2. > Should each major subsection be submitted separately? Submit the subsections - most of the search engines will come back and pick up the rest of the site. Make sure the subsection pages are good introductions to their child pages