404 on local host

Cannot access the wp-admin/install.php file. It can’t be found or it wants to open up in Dreamweaver. I have looked at all the Mac related tutorials for MAMP (and found conflicting information or just confusing me even more) and tried every avenue from those. Could someone please enlighten me, it can’t be that difficult to get the install file going.
My SQL settings as they stand now (did try with my actual username and password):
// ** MySQL settings – You can get this info from your web host ** //
/** The name of the database for WordPress */
define(‘DB_NAME’, ‘CureforSpace’);

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

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

/** 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’, ”);

I inserted the keys that I got from the wordpress site.

I want to learn how to use this using my Mac as the server before I go online.

Any help is greatly appreciated.