HTTP Error 403
403.1 Forbidden: Execute Access Forbidden

This error can be caused if you try to execute a CGI, ISAPI, or other executable program from a directory that does not allow programs to be executed.

Please contact the Web server's administrator if the problem persists.

this error message always show up for every type of script, even just the simplest script

I use PWS 4.0 

I execute the script by using this command:
  http://localhost/file.php

my computer offline