diff --git a/PC/bdist_wininst/archive.h b/PC/bdist_wininst/archive.h
index 977898cd677..35d2fd6a5fc 100644
--- a/PC/bdist_wininst/archive.h
+++ b/PC/bdist_wininst/archive.h
@@ -1,3 +1,12 @@
+/*
+  IMPORTANT NOTE: IF THIS FILE IS CHANGED, WININST-6.EXE MUST BE RECOMPILED
+  WITH THE MSVC6 WININST.DSW WORKSPACE FILE MANUALLY, AND WININST-7.1.EXE MUST
+  BE RECOMPILED WITH THE MSVC 2003.NET WININST-7.1.VCPROJ FILE MANUALLY.
+
+  IF CHANGES TO THIS FILE ARE CHECKED INTO PYTHON CVS, THE RECOMPILED BINARIES
+  MUST BE CHECKED IN AS WELL!
+*/
+
 #pragma pack(1)
 
 /* zip-archive headers
diff --git a/PC/bdist_wininst/extract.c b/PC/bdist_wininst/extract.c
index 7e70afb2281..b495e1cd8c5 100644
--- a/PC/bdist_wininst/extract.c
+++ b/PC/bdist_wininst/extract.c
@@ -1,3 +1,12 @@
+/*
+  IMPORTANT NOTE: IF THIS FILE IS CHANGED, WININST-6.EXE MUST BE RECOMPILED
+  WITH THE MSVC6 WININST.DSW WORKSPACE FILE MANUALLY, AND WININST-7.1.EXE MUST
+  BE RECOMPILED WITH THE MSVC 2003.NET WININST-7.1.VCPROJ FILE MANUALLY.
+
+  IF CHANGES TO THIS FILE ARE CHECKED INTO PYTHON CVS, THE RECOMPILED BINARIES
+  MUST BE CHECKED IN AS WELL!
+*/
+
 #include <windows.h>
 
 #include "zlib.h"
diff --git a/PC/bdist_wininst/install.c b/PC/bdist_wininst/install.c
index afbef56c9be..fac914cc5e4 100644
--- a/PC/bdist_wininst/install.c
+++ b/PC/bdist_wininst/install.c
@@ -1,3 +1,12 @@
+/*
+  IMPORTANT NOTE: IF THIS FILE IS CHANGED, WININST-6.EXE MUST BE RECOMPILED
+  WITH THE MSVC6 WININST.DSW WORKSPACE FILE MANUALLY, AND WININST-7.1.EXE MUST
+  BE RECOMPILED WITH THE MSVC 2003.NET WININST-7.1.VCPROJ FILE MANUALLY.
+
+  IF CHANGES TO THIS FILE ARE CHECKED INTO PYTHON CVS, THE RECOMPILED BINARIES
+  MUST BE CHECKED IN AS WELL!
+*/
+
 /*
  * Written by Thomas Heller, May 2000
  *
diff --git a/PC/bdist_wininst/install.rc b/PC/bdist_wininst/install.rc
index 566c341df2c..d018b484b0a 100644
--- a/PC/bdist_wininst/install.rc
+++ b/PC/bdist_wininst/install.rc
@@ -1,3 +1,12 @@
+/*
+  IMPORTANT NOTE: IF THIS FILE IS CHANGED, WININST-6.EXE MUST BE RECOMPILED
+  WITH THE MSVC6 WININST.DSW WORKSPACE FILE MANUALLY, AND WININST-7.1.EXE MUST
+  BE RECOMPILED WITH THE MSVC 2003.NET WININST-7.1.VCPROJ FILE MANUALLY.
+
+  IF CHANGES TO THIS FILE ARE CHECKED INTO PYTHON CVS, THE RECOMPILED BINARIES
+  MUST BE CHECKED IN AS WELL!
+*/
+
 //Microsoft Developer Studio generated resource script.
 //
 #include "resource.h"
diff --git a/PC/bdist_wininst/resource.h b/PC/bdist_wininst/resource.h
index 68f415f8d84..35ba3c2534d 100644
--- a/PC/bdist_wininst/resource.h
+++ b/PC/bdist_wininst/resource.h
@@ -1,3 +1,12 @@
+/*
+  IMPORTANT NOTE: IF THIS FILE IS CHANGED, WININST-6.EXE MUST BE RECOMPILED
+  WITH THE MSVC6 WININST.DSW WORKSPACE FILE MANUALLY, AND WININST-7.1.EXE MUST
+  BE RECOMPILED WITH THE MSVC 2003.NET WININST-7.1.VCPROJ FILE MANUALLY.
+
+  IF CHANGES TO THIS FILE ARE CHECKED INTO PYTHON CVS, THE RECOMPILED BINARIES
+  MUST BE CHECKED IN AS WELL!
+*/
+
 //{{NO_DEPENDENCIES}}
 // Microsoft Developer Studio generated include file.
 // Used by install.rc