I’ve stumbled apon a very cool tool for determing the health of Windows systems. It is called PAL (Performance Analysis of Logs). It is free as in beer too!!! Basically if you give it a performance log with all the coutners, it will give you a detailed report (HTML, or XML) of what is going on with your system with key areas highlighted in Red where it has having problems. The best part is you are able to see the Performance Counters that are important for on each system. They have several pre-built counters and the levels (think MOM/SCOM but without proactive monitoring), for Exchange 2003/07, Active Directory, IIS, SQL Server 2000/05 and a few others.

http://www.codeplex.com/PAL