I bet if you change or add an index.html page that redirects to the index.php page it will work.
[HTML] [HEAD] [meta HTTP-EQUIV="REFRESH" content="0; url="http://www.mysite.com/index.php"] [/HEAD] [BODY] Redirecting to main page. If your browser does not automatically redirect you then [A href="http://www.mysite.com"]click here[/A] to go there manually. [/BODY] [/HTML]
I had to change the HTML code to use square brackets instead of angle brackets since HTML code is not allowed.