after change action for test, website can not access, please help

[eric lin]

Dear cgilib user, linuxer:

   When I change my /var/www/index.html 's action of form

to what post in
   http://www.infodrom.org/projects/cgilib/test.php3

    <form action=/cgi-bin/cgitest/listall method=post>

after I hit submit bottom, my browser show me

Not Found The requested URL /cgi-bin/cgitest/listall was not found on 
this server.

please help
-- 
Sincere Eric
www.linuxspice.com
linux pc for sale