The requested URL /guestbook/< was not found on this serv

I am having issues setting up Guestbook 2.3.1. When I open the install.php page I am getting the following errors:

sql_error("Cannot connect to database"); @mysql_select_db($HTTP_POST_VARS['db'],$serverid) or $install->sql_error("Unable to select database: $db"); for ($i=0;$isql_error("Database Error"); } for ($i=0;$isql_error("Database Error"); } ?>

sql_error("Cannot connect to database"); $retval = mysql_create_db($HTTP_POST_VARS['db']) or $install->sql_error("Cannot create new database: $db"); if ($retval) { @mysql_select_db($HTTP_POST_VARS['db'],$serverid) or $install->sql_error("Unable to select database: $db"); for ($i=0;$isql_error("Database Error"); } for ($i=0;$isql_error("Database Error"); } } else { echo mysql_error(); exit(); } ?>

And yes, I did configure the config.inc.php file with the database information. So since I did not see this when I launched the install.php file, I decided to type in the
Your database:
Your MySQL host:
Your MySQL username:
Your MySQL password:
information and clicked the Create Table button, and I get the following error:

The requested URL /guestbook/< was not found on this server

I have configured two of these guestbooks before.. But I am configuring this guestbook using a different webhost, and I cannot for the life of me figure out what the heck is different about this setup that is causing me the errors. Can anyone help??