Windows Management Instrumentation can give you lots of information about the computers you run on. You'll be able to get system information, cpu utilization, memory usage and much much more...

Some Background...

A few years ago work began on organizing the standards for systems management. The Web-Based Enterprise Management (WBEM) initiative was formed by many different computer companies collaborating on what the "standard" should be. This effort to standardize was taken over by the Distributed Management Task Force (DMTF).
The DMTF reorganized the effort as the Common Information Model (CIM). CIM is not intended to be bound to any particular implementation.
WMI is the interface used to access the CIM information in Microsoft Windows.