Simply install SNMP Helper on Windows 2000, XP or 2003 systems and you can monitor numerous performance counters using PRTG Traffic Grapher and IPCheck Server Monitor - simply by adding new sensors. Both our monitoring products have built-in support for the additional counters. Within a few minutes you will be able to monitor values like "disk writes/s", "DHCP Server Requests/s", "Exchange Server: Messages/s", "SQL Server: Requests/s", and many more.
In our knowledge base at www.paessler.com/support we have compiled a list of recommended performance counters that you can monitor using SNMP Helper.
PRTG Traffic Grapher is an easy to use Windows software for monitoring and classifying bandwidth usage. It provides system administrators with live readings and long-term usage trends for their network devices. The most common usage is bandwidth usage monitoring, but you can also monitor many other aspects of your network like memory and CPU utilizations.