Windows 7: the creator owner group??

wat kind of special permissions does the creator owner group has???how to log in using an account which is the member of the creator owner group???

They are placeholder security accounts. You can't actually log in to them.

Additional Info.....

You are a member of the Creator Owner Group.
Every time you create a file or folder, you are the Creator Owner of that file or folder till someone or something physically takes ownership of it.

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Very good question, I hope that I can give a good answer. I think you read this

you will see that it is very easy to take ownership


How to Take Ownership and Full Control Permissions of Files and Folders in Vista Tip and Trick

It has no revalence with taking ownership. It's a placeholder. Like if the Creator Owner group has only read permissions, then users create place items in it only get read permissions.

It's to provide flexibility for Domain admins.

Well,, be careful of what you take ownership of.
You do not want to just go off an take ownership of files at will.

Most specifically and I quote

Source and more Information

I completely agree. You don't want to take ownership just to do it. You need to do it ONLY when there is an absolute need. I have seen many people destroy their computer doing this without taking in consideration the consequences of taking ownership away from an account that needs it. These permissions were put in place by Microsoft for a reason (with many years of study). Most of the permissions are there to protect the machine so it will run safely and efficiently and so the end-user can’t break it. – I added some REP.