Theme the “save” button in a profile page, on a Drupal 6 installation?
Found it! I thought I would post it here just in case anyone wonders the same...
HOOK_FORM_ALTER!

Yay, it was sooo easy with that. With hook_form_alter you can add a prefix and a suffix with the css classes, and that´s it.

This video podcast of mustardseedmedia helped me A LOT.

Cheers,

Rosamunda