getting started/wp-config.php problem

hey,
sorry, this is the basic-est of basic questions, but after changing wp-config.php to have all my database details and dumping all the files into my directory on my webspace, i just get that “sorry, database error” message where it says it can’t connect with the info i gave it. thing is, i’m pretty sure all the details are correct. this is what i have:

// ** MySQL settings ** //

define(‘DB_NAME’, ‘soyrev’); // The name of the database

define(‘DB_USER’, ‘soyblog’); // Your MySQL username

define(‘DB_PASSWORD’, ‘xxxxx’); // …and password

define(‘DB_HOST’, ‘localhost’); // 99% chance you won’t need to change this value

tried changing ‘localhost’ to the db hostname that i put in when creating my mysql database, but that didn’t work either. i was just wondering if anyone knew what i was doing wrong, and if they could explain what i have to do in very very simple terms. (i know practically nothing about all this)

thanks for reading, and thanks for any help you can provide!!

-jakob