403 Forbidden Error, When trying to update a page contents

[Kadir Razu]

Hi,
I am continuously receiving an error when I am trying to update my site pages contents. It showing :
"Forbidden
You don't have permission to access /admin/HomepageAdder.p hp on this server."

Please anyone help me.

Thanks in advance

[brettl]

Check the file permissions for that file. Give it at least read access.

[Kadir Razu]

Thanks. But plz give me more specific solution.
Currently my 'admin' folders permission is '755' and 'HomepageAdder. php' files permission is '775'. Which chmod I need to use?
Note : When I'm trying to give chmod 777, then the site is not loading in browser at all.
I can upload image or files in the same server, but can't able to update any texts using such kind of php scripts!
What should I do? plz suggest