Metin,
Re:HTTP error 403.1 Execute Access Forbidden
Does the error message include a program or folder name ??
Try setting the directory properties to "allow scripts to run" from Windows Explorer.
Select the directory (via Explorer)
->properties
-> "Sharing" (eg. name as 'PHP')
-> "Web Sharing"
-> "Web Sharing Folder Properties"
-> select 'Share Folder for HTTP'
-> select 'Execute Scripts'
NOTE: You will only see the "Web Sharing" option if the web server is running.
You can set these options from the PWS admin tool, but the above is a bit faster and straight forward.
Hope this helps.