I am writing a rewrite rule to send index.php to a new url as below. RewriteEngine on RewriteRule ^index.php http://www.mydomain.com/newthreadid?f=idX This works correctly but I would like it to mask / redirect blindly without the URL changing in the address bar to make it seems as this new url is the index page so to speak. I think its called masking but not entirely sure. If anyone know how its done I would appreciate it. Thanks!