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diff --git a/ETL/ETL/_mutex_win32.h b/ETL/ETL/_mutex_win32.h
new file mode 100644
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+++ b/ETL/ETL/_mutex_win32.h
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+/*! ========================================================================
+** Extended Template and Library
+** Mutex Abstraction Class Implementation
+** $Id$
+**
+** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+** General Public License for more details.
+**
+** === N O T E S ===========================================================
+**
+** This is an internal header file, included by other ETL headers.
+** You should not attempt to use it directly.
+**
+** ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __ETL__MUTEX_WIN32_H_
+#define __ETL__MUTEX_WIN32_H_
+
+/* === H E A D E R S ======================================================= */
+
+#include <windows.h>
+// extern HANDLE CreateMutex(NULL, FALSE, NULL);
+// extern CloseHandle(handle);
+// extern WaitForSingleObject(handle, INFINITE);
+// extern ReleaseMutex(handle);
+
+/* === M A C R O S ========================================================= */
+
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+_ETL_BEGIN_NAMESPACE
+
+class mutex
+{
+	HANDLE handle;
+public:
+
+	mutex()
+	{ handle = CreateMutex(NULL, FALSE, NULL); }
+
+	~mutex()
+	{ CloseHandle(handle); }
+
+	//! Exception-safe mutex lock class
+	class lock
+	{
+		mutex *_mtx;
+	public:
+		lock(mutex &x):_mtx(&x) { _mtx->lock_mutex(); }
+		~lock() { _mtx->unlock_mutex(); }
+		mutex &get() { return *_mtx; }
+	};
+
+	void lock_mutex(void)
+	{ WaitForSingleObject(handle, INFINITE); }
+
+	bool try_lock_mutex(void)
+	{ return WaitForSingleObject(handle, INFINITE)==WAIT_FAILED; }
+
+	void unlock_mutex(void)
+	{ ReleaseMutex(handle); }
+};
+
+_ETL_END_NAMESPACE
+
+/* === E X T E R N S ======================================================= */
+
+/* === E N D =============================================================== */
+
+#endif