Welcome to WHT!
all i can suggest is you put an index.html page in there along with it with meta tags in that redirect it to www.
http-equiv="refresh" content="2;URL=http://www.yourdomain.com/index.php"></head><body> <center>If you are not redirected to the site within 2 seconds <a href="http://www.yourdomain.com/index.php">Click Here</a></body></html>
there's the html code for the whole page.
there is also a way to do it via the php script however you haven't posted the source for ti so we can't really help you with something to put in the php script
also this thread should be in the programming discussion forum as it's not a tutorial