NetQueryDisplayInformation - A beginner question

Dear brothers,

I am new to win32 programming.

I have used NetQuerydisplayInformation to retreive infomation about users and groups. I could retreive all details of users of my local system or server using NET_DISPLAY_USER . But the NET_DISPLAY_GROUP structure could not give the full group details of my local system. It could give something like this:
Name: None

Comment: Ordinary users

RID: 513

Attributes: 7

I desperately in need of total groups in this system also their SID. I am a power user of my system not admin.
[580 byte] By [thomus07] at [2007-11-20 11:48:14]