Joomla!®Plug

In the db file, it is not clear to me how to enter the mysql info. Is it as follows?

// postgres example: 'pgsql://roundcubeass@localhost/roundcubemail';
// sqlite example: 'sqlite://./sqlite.db?mode=0646';
'mysql://webcubexxxxxxx@sqlserver/roundcubemail';

The above does not seem correct. The structure seems fine but what is not clear to me is how this needs to be done in the file.

For example, with the quotes, without? Something else? Perhaps it is not supposed to be on it's own line but part of another?

Then, in the main.inc.joomla.php file. I can't seem to find enough information on configuring this file to make it work. I don't need this for just one user but for all users who have IMAP accessible accounts on the mail server. How would I set this up?

$rcmail_config['auto_create_user'] = FALSE;
$rcmail_config['default_host'] = 'mail.xxxxx.com';
$rcmail_config['default_port'] = '143';
$rcmail_config['username_domain'] = '';
$rcmail_config['mail_domain'] = 'mail.xxxxx.com';
$rcmail_config['virtuser_file'] = '';
$rcmail_config['virtuser_query'] = '';
$rcmail_config['smtp_log'] = TRUE;
$rcmail_config['smtp_server'] = 'mail.xxxxx.com';
$rcmail_config['smtp_port'] = '25';
$rcmail_config['smtp_user'] = '';
$rcmail_config['smtp_pass'] = '';
$rcmail_config['smtp_auth_type'] = '';
$rcmail_config['debug_level'] = '1';
$rcmail_config['enable_caching'] = TRUE;
$rcmail_config['message_cache_lifetime'] = '10d';

Thank you for any help.

Mike