Hi Jignesh, check if these two code samples can help:

Monitoring changes in a directory
http://www.news2news.com/vfp/?example=117

Windows API functions used:
FindCloseChangeNotification
FindFirstChangeNotification
FindNextChangeNotification
WaitForSingleObject

Monitoring changes occurring within a directory (Win2K/XP)
http://www.news2news.com/vfp/?example=400

Windows API functions used:
ReadDirectoryChangesW

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As already mentioned in this thread, C++ or .Net solution would probably be more light weight/efficient than a VFP-based utility.

The second example has C++ version that can be used as a starting point for creating a light weight directory monitoring utility.