At Mark Hammond's request, removing registry key
Software\Python\PythonCore\2.0\Dll\Python20.dll -- it's no longer
needed according to him.

Note: not yet tested!
diff --git a/PCbuild/python20.wse b/PCbuild/python20.wse
index a09e51e..4cce1c7 100644
--- a/PCbuild/python20.wse
+++ b/PCbuild/python20.wse
@@ -996,11 +996,6 @@
   Root=2
 end
 item: Edit Registry
-  Key=Software\Python\PythonCore\%PY_VERSION%\Dll
-  New Value=%_DLLDEST_%\Python20.dll
-  Root=2
-end
-item: Edit Registry
   Key=Software\Python\PythonCore\%PY_VERSION%\Modules
   Root=2
 end