Wp-Admin install not working!

Hello!

Any help would be appreciated here!

I originally re-routed a domain to WordPress, and created the blog prior to installing the admin – that could be my first problem!

So far, I’ve added WP to the Cpanel of my server (DirectNIC), and viewed it to be the same on an FTP site. I’ve changed the MYSQL to reflect the changes made to WP-CONFIG.PHP in the wordpress folder – saved in the root folder “public_html.” So far, I’ve install and re-installed and nothing. When trying to go to this website: http://cinemagrotto.wordpress.com/public_html/wp-admin/install.php, this happens:

404: Page Not Found

We are terribly sorry, but the URL you typed no longer exists. It might have been moved or deleted, or perhaps you mistyped it. We suggest searching the site

I don’t know what to do at this point.

Thanks in advance for any help with this!

-Joey