Apache Web Server Folder Permission On Windows7

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http://serverfault.com – i have Apache Web server and my own CMS into server. i dont want show to all my folder files list and i want set permission to hide my files like this alert 403 Forbidden You don't have permission to access /admin/ on this server. i know how i can give permission to folder with security but, i dont know wich permission is for this and wich user must deny this permission. if anybody knows please help me. thanks and sorry for my ugly english :D (HowTos)