[RoundCube Users] installation help

Hello, I am currently receiving the following error when I try to log in for the first time.

[20-Feb-2006 00:44:59 -0500] IMAP Error: Authentication failed (LOGIN):<br>"a001 NO LOGIN failed" in on line 0

I am guessing it is due to the fact that I have no clue what I should be entering for the following config options. I really have no idea what they do exactly.

// Path to a virtuser table file to resolve user names and e-mail addresses $rcmail_config['virtuser_file'] = '';

// Query to resolve user names and e-mail addresses from the database // %u will be replaced with the current username for login. // The query should select the user's e-mail address as first col $rcmail_config['virtuser_query'] = '';

Any help would be appreciated.

Thanks