If you want to change the save password setting for a page go to:
Mozilla Firefox Version 2.0:
Tools > Options ... > Security > Exceptions > Select the site and click on Remove.Mozilla Firefox Version 1.5:
Tools > Options ... > Privacy > Passwords > View Saved Passwords and select the Passwords Never Saved tab.Mozilla Firefox Version 1.0:
Tools > Options... > Saved passwords > View saved passwords and select the Passwords Never Saved tab.After you remove pages from the list in future you will be asked again whether you want store any passwords used on that page.