here's a short perl script i wrote/lifted to re-route.

#!/usr/bin/perl

$acc = $ENV{"HTTP_ACCEPT"};

if ($acc =~ "wml"){
	print "Location: http://www.dfilm.com/index.wml\r\n\r\n";
}elsif ($acc =~ "hdml"){
  	print "Location: http://www.dfilm.com/index.hdml\r\n\r\n";
}else {
    print "Location: http://www.dfilm.com/index_main.html\r\n\r\n";
}
  
#EXIT
	exit;

i also did a redirect on /index.html to theabove script using 
the .htaccess file. 
here's the line for the .htaccess file:

Redirect /index.html http://www.dfilm.com/cgi-bin/route.cgi