Find out Groups and their rights on folders?

Hi,
i want to find out, which groups have which art of rights on folders on a NTFS-System.
How can I get the information, which groups have rights and WHAT rights (read/write/...).
I know how I can set rights and how i can get the owner of a folder, but thats not what i need.

Please don´t give me links to other sites, i need a little code-example.

thanks,
Martin