diff --git a/include/boost/concept_check/borland.hpp b/include/boost/concept_check/borland.hpp
new file mode 100644
index 0000000..107926b
--- /dev/null
+++ b/include/boost/concept_check/borland.hpp
@@ -0,0 +1,25 @@
+// Copyright David Abrahams 2006. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_CONCEPT_CHECK_BORLAND_DWA2006429_HPP
+# define BOOST_CONCEPT_CHECK_BORLAND_DWA2006429_HPP
+
+namespace boost {
+
+template <class ModelFn>
+struct concept_check;
+
+template <class Model>
+struct concept_check<void(*)(Model)>
+{
+    enum { instantiate = sizeof((((Model*)0)->~Model()), 3) };
+};
+
+#  define BOOST_CONCEPT_ASSERT( ModelInParens )                     \
+  enum { BOOST_PP_CAT(boost_concept_check,__LINE__) =               \
+         boost::concept_check<void(*)ModelInParens>::instantiate    \
+  }
+
+} // namespace boost::concept_checking
+
+#endif // BOOST_CONCEPT_CHECK_BORLAND_DWA2006429_HPP
diff --git a/include/boost/concept_check/general.hpp b/include/boost/concept_check/general.hpp
new file mode 100644
index 0000000..cd09fb0
--- /dev/null
+++ b/include/boost/concept_check/general.hpp
@@ -0,0 +1,82 @@
+// Copyright David Abrahams 2006. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_CONCEPT_CHECK_MSVC_DWA2006429_HPP
+# define BOOST_CONCEPT_CHECK_MSVC_DWA2006429_HPP
+
+# ifdef BOOST_OLD_CONCEPT_SUPPORT
+#  include <boost/concept_check/has_constraints.hpp>
+#  include <boost/mpl/if.hpp>
+# endif
+
+
+// This implementation works on GCC and Comeau, but has actually been
+// fairly carefully tuned to work on GCC versions starting with
+// gcc-2.95.x.  If you're trying to get an additional compiler to pass
+// the tests you might consider breaking out a separate gcc.hpp and
+// starting over on the general case.
+namespace boost
+{
+  namespace concept_checking
+  {
+    template <void(*)()> struct instantiate {};
+  }
+  
+  template <class ModelFn> struct concept_check_;
+
+  template <class Model>
+  void concept_check_failed()
+  {
+      ((Model*)0)->~Model();
+  }
+
+  template <class Model>
+  struct concept_check
+  {
+      concept_checking::instantiate<concept_check_failed<Model> > x;
+      enum { instantiate = 1 };
+  };
+
+# ifdef BOOST_OLD_CONCEPT_SUPPORT
+  
+  template <class Model>
+  void constraint_check_failed()
+  {
+      ((Model*)0)->constraints();
+  }
+
+  template <class Model>
+  struct constraint_check
+  {
+      concept_checking::instantiate<constraint_check_failed<Model> > x;
+      enum { instantiate = 1 };
+  };
+  
+  template <class Model>
+  struct concept_check_<void(*)(Model)>
+    : mpl::if_c<
+          concept_checking::has_constraints<Model>::value
+        , constraint_check<Model>
+        , concept_check<Model>
+      >::type
+  {};
+  
+# else
+  
+  template <class Model>
+  struct concept_check_<void(*)(Model)>
+    : concept_check<Model>
+  {};
+  
+# endif
+  
+  // Usage, in class or function context:
+  //
+  //     BOOST_CONCEPT_ASSERT((UnaryFunctionConcept<F,bool,int>));
+#  define BOOST_CONCEPT_ASSERT( ModelInParens )                             \
+  enum { BOOST_PP_CAT(boost_concept_check,__LINE__) =                       \
+         ::boost::concept_check_<void(*) ModelInParens>::instantiate        \
+  }
+}
+
+#endif // BOOST_CONCEPT_CHECK_MSVC_DWA2006429_HPP
diff --git a/include/boost/concept_check/has_constraints.hpp b/include/boost/concept_check/has_constraints.hpp
new file mode 100644
index 0000000..e19f664
--- /dev/null
+++ b/include/boost/concept_check/has_constraints.hpp
@@ -0,0 +1,31 @@
+// Copyright David Abrahams 2006. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_CONCEPT_CHECK_HAS_CONSTRAINTS_DWA2006429_HPP
+# define BOOST_CONCEPT_CHECK_HAS_CONSTRAINTS_DWA2006429_HPP
+
+namespace boost { namespace concept_checking { 
+
+// Here we implement the "metafunction" that detects whether a
+// constraints metafunction exists
+typedef char yes;
+typedef char (&no)[2];
+
+template <class Model, void (Model::*)()>
+struct wrap_constraints {};
+    
+template <class Model>
+inline yes has_constraints_(Model*, wrap_constraints<Model,&Model::constraints>* = 0);
+inline no has_constraints_(...);
+
+template <class Model>
+struct has_constraints
+{
+    BOOST_STATIC_CONSTANT(
+        bool
+      , value = sizeof( concept_checking::has_constraints_((Model*)0) ) == 1 );
+};
+
+}} // namespace boost::concept_checking
+
+#endif // BOOST_CONCEPT_CHECK_HAS_CONSTRAINTS_DWA2006429_HPP
diff --git a/include/boost/concept_check/msvc.hpp b/include/boost/concept_check/msvc.hpp
new file mode 100644
index 0000000..3968469
--- /dev/null
+++ b/include/boost/concept_check/msvc.hpp
@@ -0,0 +1,90 @@
+// Copyright David Abrahams 2006. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_CONCEPT_CHECK_MSVC_DWA2006429_HPP
+# define BOOST_CONCEPT_CHECK_MSVC_DWA2006429_HPP
+
+# ifdef BOOST_OLD_CONCEPT_SUPPORT
+#  include <boost/concept_check/has_constraints.hpp>
+#  include <boost/mpl/if.hpp>
+# endif
+
+
+namespace boost
+{
+  namespace concept_checking
+  {
+    template <class Model>
+    struct concept_check_
+    {
+        virtual void failed(Model* x)
+        {
+            x->~Model();
+        }
+    };
+  }
+  
+# ifdef BOOST_OLD_CONCEPT_SUPPORT
+  
+  namespace concept_checking
+  {
+    template <class Model>
+    struct constraint_check
+    {
+        virtual void failed(Model* x)
+        {
+            x->constraints();
+        }
+    };
+  }
+
+  template <class Model>
+  struct concept_check
+    : mpl::if_c<
+          concept_checking::has_constraints<Model>::value
+        , concept_checking::constraint_check<Model>
+        , concept_checking::concept_check_<Model>
+      >::type
+  {};
+      
+# else
+  
+  template <class Model>
+  struct concept_check
+    : concept_checking::concept_check_<Model>
+  {};
+  
+# endif
+
+# if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
+
+  //
+  // The iterator library sees some really strange errors unless we
+  // use partial specialization to extract the model type with
+  // msvc-7.1
+  // 
+  template <class Model>
+  struct concept_check<void(*)(Model)>
+    : concept_check<Model>
+  { };
+
+# define BOOST_CONCEPT_ASSERT( ModelInParens )                          \
+  enum { BOOST_PP_CAT(boost_concept_check,__LINE__) =                   \
+         sizeof(::boost::concept_check<void(*) ModelInParens>)          \
+  }
+  
+# else
+  
+  template <class Model>
+  concept_check<Model>
+  concept_check_(void(*)(Model));
+  
+# define BOOST_CONCEPT_ASSERT( ModelInParens )                          \
+  enum { BOOST_PP_CAT(boost_concept_check,__LINE__) =                   \
+         sizeof(::boost::concept_check_((void(*) ModelInParens)0))      \
+  }
+  
+# endif 
+}
+
+#endif // BOOST_CONCEPT_CHECK_MSVC_DWA2006429_HPP