Installation help please

I tried install WordPress on local computer. I all way got the message: “Error establishing a database connection”, but I can use the same username and password connect to MySQL through DOS command. On the wp-config.php, my script is:
<?php
// ** MySQL settings ** //

define(‘DB_NAME’,’wordpress’); // The name of the database
define(‘DB_USER’,’wpadmin’); // Your MySQL username
define(‘DB_PASSWORD’,’*******’); // …and password
define(‘DB_HOST’,’localhost’); // 99% chance you won’t need to change this value

// Change the prefix if you want to have multiple blogs in a single database.
$table_prefix = ‘wp_’; // example: ‘wp_’ or ‘b2’ or ‘mylogin_’

// Change this to localize WordPress. A corresponding MO file for the
// chosen language must be installed to wp-includes/languages.
// For example, install de.mo to wp-includes/languages and set WPLANG to ‘de’
// to enable German language support.
define (‘WPLANG’, ”);

/* Stop editing */

define(‘ABSPATH’, dirname(__FILE__).’/’);
require_once(ABSPATH.’wp-settings.php’);

?>

I read a lot of review and advice in this site and it seem doesn’t work for me. Please help me.
Thank you in advance.