Using CalculatedPerformance ZenPack...

Greetings -- I've downloaded the CalculatedPerformance Zenpack. I'm using an example in the WIKI, but some of the pieces don't work for me. -- I'm wondering if [again], I'm seeing that this won't work w/o SNMP-Informant installed on Windows...

I"m using (hw.totalMemory - memAvailReal) / hw.totalMemory

the best I can do here is find "hrMemorySize", the other two indicate that they're invalid. Then, the next thing I get to do, is calculate the CPU-util on a Windows system that has multiple cores. I've got to do this a.)without Informant and b.)Without installing a management agent on the client. (it takes me a month to touch 140 windows servers manually...)

Thanks!