Got class not registered exception from function

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COM

VisualC++

Hello friends,
I am new in VC++ area and I got class not registered exception from the

AVIFileOpen()

function.

HRESULT CAviExtract::OpenAviFile(CString szFile)
{	
    int nNumAudioStreams = 0;
    try
    {
	hr = AVIFileOpen(&m_pAviFile, szFile,  OF_READWRITE, NULL);
	if(hr != S_OK)//Got Class not registered exception here.
	     return hr;

	hr = AVIFileInfo(m_pAviFile, &m_pAviFileInfo, sizeof(m_pAviFileInfo));
	if(hr != S_OK)
             return hr;		
	
	hr = AVIFileGetStream(m_pAviFile, &m_pAVIVideoStream, streamtypeVIDEO, 0);
	if(hr == AVIERR_NODATA || hr == AVIERR_MEMORY)
	     return hr;
	
	hr = AVIStreamInfo(m_pAVIVideoStream, &m_pStreamInfo, sizeof(m_pStreamInfo));
	if(hr != S_OK)
	     return hr;		
        }
	catch(...)
	{

	}
	return hr;
}

Please help me to resolve it. I am not using any COM regarding functionality and using Windows XP 32 bit with VS2005.