Hello lake59,
Automatic filling of passwords is possible in Mozilla Firefox (
http://www.mozilla.com/firefox/) wherein you can store username and password in the web browser's memory and when u load the webpage containing the login form, the browser automatically fills in the username and password. Check out the following links...
http://support.mozilla.com/tiki-view_forum_thread.php?locale=it&forumId=1&comments_parentId=301004http://kb.mozillazine.org/Password_only_filled_after_entering_user_name-$athi$h