diff --git a/installer/lib/wrapper/win64/README-x64-win.txt b/installer/lib/wrapper/win64/README-x64-win.txt
index 086e57d67b..91c67de703 100644
--- a/installer/lib/wrapper/win64/README-x64-win.txt
+++ b/installer/lib/wrapper/win64/README-x64-win.txt
@@ -1,5 +1,10 @@
 Changes will probably be needed for newer versions than 3.5.12.
 
 To use the patch in this directory, copy Makefile-windows-x86-32.nmake to
-Makefile-windows-x86-64.nmake then "patch < x64-win.patch". Compiles cleanly
-using VS2010.
+Makefile-windows-x86-64.nmake then "patch < x64-win.patch".
+
+Configure your environment per the apache-ant instructions (i.e., set ANT_HOME
+and JAVA_HOME). Then in the wrapper source directory, run build64.bat.
+
+Compiled in VS2010SP1 after creating %USERPROFILE%\.ant.properties with:
+vcvars.bat="C:\\Program Files (x86)\\Microsoft Visual Studio 10.0\\VC\\bin\\amd64\\vcvars64.bat".
diff --git a/installer/lib/wrapper/win64/x64-win.patch b/installer/lib/wrapper/win64/x64-win.patch
index 0ceac6ea4a..2194801131 100644
--- a/installer/lib/wrapper/win64/x64-win.patch
+++ b/installer/lib/wrapper/win64/x64-win.patch
@@ -1,4 +1,4 @@
---- Makefile-windows-x86-32.nmake	2011-09-29 20:34:25.447939000 +0000
+--- Makefile-windows-x86-64.nmake	2011-09-29 20:34:25.447939000 +0000
 +++ Makefile-windows-x86-64.nmake	2011-09-29 20:51:57.297170000 +0000
 @@ -9,19 +9,19 @@