Apache index page?

Hello.

I’ve installed an apache server with php, phpmyadmin and mysql. It works just fine! :}

But my question is, how do I do, so that when people enter my site
south-graphix.no-ip.com they come to a webpage instead of the list, where you see what files there are in the server.

I’ve tried to put the index page in the htdocs (where all the web files must be), but no result, I still come to the list.

Thnx in advance!