Drupal is a great content management system (CMS)
Admin login
$website/user/login
eg
Reset admin password
UPDATE `users` SET `pass`=MD5('mynewpassword') WHERE `uid`=1;
where mynewpassword is the new password you'd like to use.
Database settings
sites/default/settings.php$db_url = 'mysql://username:password@localhost/databasename';
In some installations, the database settings are defined elsewhere (eg stratics.com)
See