questo è l' errore per esteso

Forbidden

You don't have permission to access /pro/install.php on this server.
Apache-AdvancedExtranetServer/2.0.50 (Mandrakelinux/7mdk) mod_perl/1.99_16 Perl/v5.8.5 mod_ssl/2.0.50 OpenSSL/0.9.7d PHP/4.3.8 Server at www.tizio.casa Port 80