Many questions on setup

I have many questions:
1. When I save the opened wp-config-sample to wordpad, I can only save it at wp-config.text, how do I do that for php?

2. This is what I put in define(‘DB_NAME’, ‘frugalfo_sitemagixprod’); // The name of the database
define(‘DB_USER’, ‘fugalfo’); // Your MySQL username
define(‘DB_PASSWORD’, ‘xxxxxx’); // …and password
define(‘DB_HOST’, ‘localhost’); //

I saved the above to text (since I don’t know how on php. and clicked on the /wp-admin/install.php but got MANY errors.

Here they are hide_errors(); $installed = $wpdb->get_results(“SELECT * FROM $wpdb->users”); if ($installed) die(__(‘
Already Installed
You appear to have already installed WordPress. To reinstall please clear your old database tables first.

‘) . ”); $wpdb->show_errors(); switch($step) { case 0: ?>

Thanks