Sample code high time precision in VC++.NET 2003

Could someone share me the sample/source for .NET managed extension in VC++.NET 2003 for high resolution time calculation in milisecond, just like on this below :
//////////////////////////////////////////////////////////////////////
//
// HighTime.h: interface for the CHighTime class.
//
//////////////////////////////////////////////////////////////////////
//
// CHighTime and CHighTimeSpan are two classes for high resolution time
// The range is +/-29000 years and smallest step is 0.1 microsecond
// They works like COleDateTime and COleDateTimeSpan.
// I wrote these because MS could not write working time classes
//
// Author: Hakan Trygg, h.kan@home.se
abudiman250172Asked:
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lakshman_ceCommented:

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