Display Specific Windows PerfMon Counter Data in ASP.NET Web Page

I've been working on a sort of one-stop-shop web page for monitoring multiple servers across a particular domain, whether it is viewing real-time statuses of critical system services or getting a quick look at a set of perfmon stats.

The latter is presenting an issue for me. I've used C# codebehind for the services status display and I'd like to do the same for the perfmon counters. The problem I'm having is that I can't seem to pin down exactly how to get the data from PerformanceMonitor(String,String) to display in an intelligible way on the ASPX page.

Any help is greatly appreciated!