.Net Monitoring throughput Suggestions needed

Yes that tech tip is what I started with when I was researching this. Unfortunatley, I don't think powershell is allowed on the network I am working on. I have reviewed many articles and got the impression it was query[0] all the way down. Most of the ways I have changed it make it not compile, not sure what I am missing but I do think it is Query definition if its a code issue at all