Connect to Admin

[admin19]

Hi All,
       This may seem like a dumb question but are you supposed to connect to
the Admin area using: http://www.yoursite.com/listmail/admin.php

I get this:

Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'flower'@'localhost' (using password: NO) in /home/flower/public_html/yoursite/listmail/admin.php on line 2946
Could not connect to MySQL. Please check your MySQL database, username, password, and permissions and set up ListMail's config.php
MySQL Error: Access denied for user 'flower'@'localhost' (using password: NO)

I can connect if I use:
http://www.yoursite.com/listmail/edituser.php

But is this how it should be?
PS
I have checked all database setting and the info punched in there is 100% correct, so I am a bit baffled by this message and how to get rid of it.
Regards, Steve

[DW]

admin.php is a file that is included by other scripts.  It should not normally be browsed to directly.  Can you login at http://example.com/listmail or http://example.com/listmail/login.php?

Regards

[admin19]

Thank you for clarifying that point for me.
I thought it may be something that would only get worse.
Regards, Steve