Windows Server 2003 Auditing for account or group creation priveleges

I need some help to find option for auditing user or group access privileges. I cannot find proper resources for the same. I and I want to do that on Windows Server 2003 AD. I had enabled auditing in my system. It only provide me a Event ID 566 in it and there is nothing else mentioned.

Access Manager servers using the audit trail files to store records of server activity. The output of a specific server event log is called. An audit trail is a collection of multiple records that provide information on server activity. All audit trail files of Access Manager are in ASCII format. The contents of the log files and audit trail can be used as a source of information to monitor and troubleshoot the activity of the Access Manager servers.