Hi ARJUN!
> I am looking for sample RS232 port communication SAMPLE program in VC++.
For very good examples and ready-to-use implementations see
See: Serial library for C++
http://www.codeproject.com/system/serial.asp
See: CSerialPort v1.03 - Serial Port Wrapper
http://www.codeproject.com/system/cserialport.asp

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Jochen
My blog about Win32 and .NET
http://blog.kalmbachnet.de/