Drupal Articles » Custom theming forms
This section outlines how to theme forms (CCK, user, etc) throughout Drupal 6.
Since http://drupal.org/node/101092 is quite out of date, and to my knowledge there are no comparable guides, I'm working on creating up to date guides on theming various forms in Drupal. Since it's the one I'm working on for myself right now, the first I will do is the My Account form (user/#/edit).
Much of this information comes from the excellent Drupal Dojo videos which introduce the method for preparing theme template files, as well as theming forms--you should absolutely watch them:
