connected IDE information from registry in Windows vista

Hi,

i want to read connected IDE information(Vendor Id etc.) from registry
in Windows Vista.
in Windows Xp i got it from following path.

HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\Scsi\Scsi Port 1\Scsi Bus
0\Target Id 0\Logical Unit Id 0

HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\Scsi\Scsi Port 0\Scsi Bus
0\Target Id 0\Logical Unit Id 0

But in the Windows Vista there is some difference in the registry path.

Path is as follows.

[HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\Scsi\Scsi Port 2\Scsi Bus
0\Initiator Id 255]

but in this path I am not getting any Information.

i want to read same information as in WindowsXp(registry).

please reply me soon if any body can help.