Error when posting new thread
 

hey all

i've the following error when members posting new thread


You don't have permission to access /forum/newthread.php on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.15 (Unix) mod_ssl/2.2.15 OpenSSL/0.9.8n DAV/2 mod_fcgid/2.3.5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.eg123.com Port 80

how can i please solve it??!

thanks in advance