ActiveXperts Network Monitor 2015 proactively manages network servers, devices, databases and more.

Microsoft Resource Kits - Windows 2003 Resource Kit

Kernprof.exe  (Windows 2003 Resource Kit)

The Window Server 2003 Resource Kit is a set of tools that system administrators and engineers use to manage or support a Windows Server 2003 system. Use it to streamline management tasks such as troubleshooting operating system issues, managing Active Directory, configuring networking and security features, and automating application deployment.
Kernprof.exe - Kernel Profiler
This command-line tool provides counters for and profiles of various functions of the Microsoft® Windows® 2000 kernel. With Kernel Profiler, you can monitor details and frequency for each function the kernel calls, how often a process switches from User mode to Kernel mode, and, on a multi-processor computer, display information for each processor.