>On a Windows 2000 Server (Advance server) you have the active directory.
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>I do not know any thing about this but I think it passable to set the server to monitor a directory and when a file is created in the directory the server will fire a event.
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>How can I set my Windows 200 Server to fire a action when a file is copy in a directory?

It's actually an API call - FindFirstChangeNotification() and FindNextChangeNotification(); it need not be the server. There's sample code in the MSDN docs under the topic Monitoring Changes in a Directory or Directory Tree in the Platform SDK section. It's best written in C++, C# or VB.Net AFAIC.