Add build support for AMD64.
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index 7ca8186..25d0e8a 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -280,6 +280,13 @@
of warnings about conversion from size_t to int, which will be fixed in
future Python releases.
+Building for AMD64
+------------------
+
+The build process for the ReleaseAMD64 configuration is very similar
+to the Itanium configuration; make sure you use the latest version of
+vsextcomp.
+
YOUR OWN EXTENSION DLLs
-----------------------
If you want to create your own extension module DLL, there's an example