[help] How do i make a file share index.php or html?

i would just like to know how to setup my fast maps download, i have my own domain name and my own web hosting

but everytime i go to this page http://www.quantumxgamers.com/files/cstrike/maps/

i get this error

Forbidden
You don't have permission to access /files/ on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Apache/1.3.33 Server at www.quantumxgamers.com Port 80

i put in a index.php blank i dnt get the error but how do i make it like this: http://files.css-quad.ru/css/

i have it enabled on my web hosting to allow people to view it

but i dont know what to put in the index.php or html could someone help me

like this http://files.css-quad.ru/css/