help with guestbook

Ive just uploaded my guestbook to my server, ive entered the db information but when i click on the continue to admin link button i get a connection error, ive deleted everything and tried again but the same problem happens

Warning: mysql_connect() [function.mysql-connect]: Access denied for user: 'root@localhost' (Using password: NO) in /home/virtual/site60/fst/var/www/html/guestbook/lib/mysql.class.php on line 30
Connection Error

If you read the instructions and if you have paid any attention to that error message you would notice that you didn't enter your database info in
/admin/config.inc.php.
So, what you need to do is open that file and change first few lines :

$GB_DB["dbName"] = "your_database";
$GB_DB["host"] = "localhost";
$GB_DB["user"] = "your_username";
$GB_DB["pass"] = "your_password";

Of course you would input your login info