apache 2.2.2 and psp

Hi,
someone has ever configurated Apache 2.2.2 with Prolog Server Page in
swi-prolog under Windows?

http://www.prologonlinereference.org/psp.psp

I've done this:
- created psp.exe
- putted this to httpd.conf
ScriptAlias /swi-psp/ "c:/programmi/pl/bin/"
DirectoryIndex index.psp
AddType application/x-httpd-psp .psp
Action application/x-httpd-psp /swi-psp/psp.exe


- putted in psp.ini this:
:- set_psp_flag(server_directory, 'C:\Programmi\Apache Software
Foundation\Apache2.2\').



Unfortunatelly when I access to an index.psp I got:
Forbidden

You don't have permission to access /swi-psp/psp.exe/index.psp on this
server.


What I have to set in httpd.conf to gave this permissions?

Thanx
Marco

ok missing these:
<Directory "C:/Programmi/pl/bin">
AllowOverride None
Options None
Order allow,deny
Allow from all
</Directory>