[web2py] problems running web2py with apache on windows (client denied by server configuration)

[giovanni allegri]

I have to run web2py on a Windows dev server (before moving the app to
a Linux box!)
I've tried to setup the minimal apache conf:

WSGIScriptAlias / path_to_web2py\wsgihandler.py
  <Directory path_to_web2py\wsgihandler.py>
    AllowOverride None
    Order Allow,Deny
    Deny from all
    <Files wsgihandler.py>
      Allow from all
    </Files>
  </Directory>

  AliasMatch ^/([^/]+)/static/(.*) path_to_web2py\applications\
$1\static\$2
  <Directory path_to_web2py\applications\*\static\>
    Order Allow,Deny
    Allow from all
  </Directory>

  <Location /admin>
  Deny from all
  </Location>

  <LocationMatch ^/([^/]+)/appadmin>
  Deny from all
  </LocationMatch>

(path_to_web2py is obviously an obscured path for my real physical
path)

I will study the problem of moving web2py to a sublocation (I can't
keep it to the server root), but alos this first configuration doesn't
work for me.
If I browse to http://localhost/, I expect to see the default
applications, instead I get an Access Denied.
The Apache error.log says:

[error] [client 127.0.0.1] client denied by server configuration:
path_to_web2py/wsgihandler.py

What am I doing wrong?
giovanni