diff --git a/Common/ComData.cpp b/Common/ComData.cpp
new file mode 100644
index 0000000..f4e2dd6
--- /dev/null
+++ b/Common/ComData.cpp
@@ -0,0 +1,78 @@
+ // ComData.cpp : implementation file
+//
+
+#include "stdafx.h"
+#include "ComData.h"
+
+#ifdef _DEBUG
+#define new DEBUG_NEW
+#undef THIS_FILE
+static char THIS_FILE[] = __FILE__;
+#endif
+
+/////////////////////////////////////////////////////////////////////////////
+// CComData
+
+IMPLEMENT_DYNCREATE(CComData, CObject)
+
+CComData::CComData()
+{
+	Initialize();
+}
+
+CComData::~CComData()
+{
+}
+
+void CComData::Initialize()
+{
+	m_ComDataType	= NONE;
+	m_FromID = _T("");
+	m_BodyType = BODY_NONE;
+	m_StringBody = _T("");
+	m_BArrayBody.RemoveAll();
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// CComData serialization
+void CComData::Serialize(CArchive& ar)
+{
+	try {
+		if (ar.IsStoring())
+		{
+			ar << m_ComDataType;
+			ar << m_FromID;
+			ar << m_BodyType;
+			ar << m_StringBody;
+		}
+		else
+		{
+			ar >> m_ComDataType;
+			ar >> m_FromID;
+			ar >> m_BodyType;
+			ar >> m_StringBody;
+		}
+
+		m_BArrayBody.Serialize( ar );
+	}
+	catch(CArchiveException* e) {
+		TCHAR csError[CHAR_BUFFER_SIZE];
+		e->GetErrorMessage(csError, CHAR_BUFFER_SIZE);
+		AfxMessageBox(csError);
+	}
+}
+
+void CComData::SetBArrayBody( LPBYTE pData, int nSize )
+{
+	m_BArrayBody.SetSize(nSize);
+	memcpy(m_BArrayBody.GetData(), pData, nSize);
+}
+
+LPBYTE CComData::GetBArrayBody()
+{
+	return m_BArrayBody.GetData();
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// CComData commands