typedef struct _CONFIGURATION_COMPONENT
{
     CONFIGURATION_CLASS Class;
     CONFIGURATION_TYPE Type;
     DEVICE_FLAGS Flags;
     WORD Version;
     WORD Revision;
     ULONG Key;
     ULONG AffinityMask;
     ULONG ConfigurationDataLength;
     ULONG IdentifierLength;
     CHAR * Identifier;
} CONFIGURATION_COMPONENT, *PCONFIGURATION_COMPONENT;

Windows Vista Kernel Structures