Complete Newbie

Having never done much with php on my site, I’m at a bit of a loss. According to the installation procedure, I need to change some things in the congfig-sample and resave as config. I did that (or at least I thought I did.) Then uploaded to my website. Unfortunately, going to the wp-admin/install, it tells me that there’s no config.php file to open.
I’m pretty sure it’s a case of me not putting the information where it needs to be in the config file. Can someone SHOW me what it would look like? Here’s the original sample:
define('DB_NAME', 'wordpress'); // The name of the database
define('DB_USER', 'username'); // Your MySQL username
define('DB_PASSWORD', 'password'); // ...and password
define('DB_HOST', 'localhost'); // 99% chance you won't need to change this value
Would someone make alterations to this sample (visual example for a complete programming novice) so I know exactly where the changes should be? Once I eliminate user error, I can go the next step and speak with my webhost.
Thanks!