SECURITY_NULL_SID_AUTHORITY: _SID_IDENTIFIER_AUTHORITY = (Value: (0, 0, 0,0)) SECURITY_WORLD_SID_AUTHORITY: _SID_IDENTIFIER_AUTHORITY = (Value: (0, 0, 0,0,1)) SECURITY_LOCAL_SID_AUTHORITY: _SID_IDENTIFIER_AUTHORITY = (Value: (0, 0, 0,2)) SEC

Delphi unit with NT security routine. Suitable for Windows XP