Help with MySQL settings

I am one of the Yahoo! small business customers that got transferred over to Aabaco Small Business. My WordPress site is located at https://www.americajr.us/blog and I keep getting the “Error Accessing Database Connection”

I need help figuring out mySQL settings…

// ** MySQL settings – You can get this info from your web host ** //
/** The name of the database for WordPress */
define(‘DB_NAME’, ‘americajr’);

/** MySQL database username */
define(‘DB_USER’, ”);

/** MySQL database password */
define(‘DB_PASSWORD’, ”);

/** MySQL hostname */
define(‘DB_HOST’, ‘localhost’);

/** Database Charset to use in creating database tables. */
define(‘DB_CHARSET’, ‘utf8’);

/** The Database Collate type. Don’t change this if in doubt. */
define(‘DB_COLLATE’, ”);

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Would the DB_Name be “americajr” or “americajr.us/blog”

Also, is the username my login for wp-login.php or is it something different?

I tried entering the values for wp-login and it didn’t work.

I feel like something didn’t get set-up right. Sometimes my blog appears correctly and if I refresh then it goes back to the error page.

Please help!!!!!