SIM manage the esx server

[speedwolf]

HI:
My sim CMS is on a windows 2003 server. I want to use it to manage an proliant esx server with the vmware esx server 3.0 OS . No VMM installed ,and I have installed the latest psp on it and configure it in SIM and seems successfully.
Now, from sim , I can see some details about this esx server: os info,firmware info,system type... Through SMH web ,i can see more . I can also get a details report from sim with this machine, contains dimm , fan, temerature,software....
But I cann't subscribe to the wbem , though the sim discovery the wbem installed on the esx server. Thouth i have the snmp configured , i am still doubting the event alarming ability .
I logged on the esx server and actually found the webm installed, but when I ran the "cimprovider" ,gave me an error.Can I fix that? or the wbem is just not supported by the sim on the esx environment?
Anybody has experience about the sim managing the esx server without VMM?
Any suggestions will be appreciated!