Probs with first installation

I have tried to install WP several times, but I am still having issue. I am not a total web dork, but I am feeling like one now.
Here is how my WP config file is right now:
define(‘DB_NAME’, ‘downthe_wordpress’); // The name of the database
define(‘DB_USER’, ‘downthe_julie’); // Your MySQL username
define(‘DB_PASSWORD’, ‘downthe_******’); // …and password
define(‘DB_HOST’, ‘localhost’); // 99% chance you won’t need to change this value
And when you go to the main page of my website, it reads the following:
Warning: main(/home/downthe/public_html/wp-includes/wp-db.php): failed to open stream: No such file or directory in /home/downthe/public_html/wp-settings.php on line 30
Fatal error: main(): Failed opening required ‘/home/downthe/public_html/wp-includes/wp-db.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/downthe/public_html/wp-settings.php on line 30
Any help or guidance would be much appreciative.
Thanks!