problem using WMI for ISCSI

Hi All,
I am using WMI (on Win Server 2003 SP2) for retrieving info. of ISCSI IP address. The class ISCSI_IP_Address contains all the info. related to that. This class is present under root\wmi repository.
Using WmiTool, when i try to check for the instance of this class, it gives me message “No instance available”. I already have connected to ISCSI target machine n that shows me required drives.

I checked for this class on net , n i got info. that this class requires Iscsimgt.mof, which is not present in my WMI SDK. So from where can I get that ?
can anyone please tell me , if i m going wrong ?

-thanks.
rishita.