massive problem

[mattalien]

whenever i go to the admin panel and select home, edit page or create adoptable, this comes up:


Home:
Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'mattalien_mattal'@'localhost' (using password: YES) in /www/oxyhost.com/m/a/t/mattalien/htdocs/adoptables/adm/console.php on line 17
Cannot Connect to Database

Edit page:
Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'mattalien_mattal'@'localhost' (using password: YES) in /www/oxyhost.com/m/a/t/mattalien/htdocs/adoptables/adm/pages.php on line 17
Cannot Connect to Database

Create New Adoptable:
Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'mattalien_mattal'@'localhost' (using password: YES) in /www/oxyhost.com/m/a/t/mattalien/htdocs/adoptables/adm/newadoptable.php on line 17
Cannot Connect to Database

can anyone help me here?