Win7: CPU Utilization returns 0

[b0fh]

I try to monintor a Windows 7 Professional host (using Window's build in snmpd). Interface and disk space work, but CPU Utilization values return 0 for each core. I use the standard host-resources MIB as set in cacti's host-template. When I do an snmpwalk on 1.3.6.1.2.1.25.3.3.1.2 the "hrProcessorLoad" items return 0, too. Did anyone manage to monitor CPU utilization on Win7 and can post the appropriate IDs (and even a cacti template)?

Thanks a lot

[BSOD2600]

1) you sure snmp is properly running and configured? I'd suggest the Microsoft SNMP agent instead of net-snmp.
2) are you sure the cpus are actually active when cacti polled them? What values did you expect?