adding tabs to an existing form

I have a large/long work order form that has well defined header, testing, details, part usage, and labor summary sections on the form.  I would like to integrate tabs into this form for easier navigation, without having to rewrite it.  As I understand tabs I would have to break out each section into a separate template, which would require me to break out the update template also.  Is this correct?  Is there a way to easily integrate tabs into this mess without having to rewrite?

-Bill