--- msvccompiler.py	2007-08-28 23:01:28.843750000 -0700
+++ msvccompiler_patched.py	2007-08-28 23:01:10.078125000 -0700
@@ -240,7 +240,8 @@
             # x86
             if self.__version >= 7:
                 self.__root = r"Software\Microsoft\VisualStudio"
-                self.__macros = MacroExpander(self.__version)
+                if not (os.environ.has_key("DISTUTILS_USE_SDK") and os.environ.has_key("MSSdk") and self.find_exe("cl.exe")):
+                    self.__macros = MacroExpander(self.__version)
             else:
                 self.__root = r"Software\Microsoft\Devstudio"
             self.__product = "Visual Studio version %s" % self.__version