diff --git a/Docs/src/build.but b/Docs/src/build.but
index e1474a1d..4dcfd58b 100644
--- a/Docs/src/build.but
+++ b/Docs/src/build.but
@@ -67,6 +67,8 @@ The open-source \W{http://www.mingw.org/}{MinGW} can also be used to for buildin
 
 To compile the documentation as a CHM file, hhc.exe must be in the PATH. It is available as part of \W{http://msdn.microsoft.com/library/en-us/htmlhelp/html/hwMicrosoftHTMLHelpDownloads.asp}{HTML Help Workshop}.
 
+To build NSIS Menu, install \W{http://www.wxwidgets.org/}{wxWidgets 2.8}, create an environment variable named \c{WXWIN} containing the path to the installation directory of wxWidgets, run \c{Contrib\\NSIS Menu\\wx\\wxbuild.bat} and build NSIS as usual.
+
 \\<b\\>Important notes for Microsoft Visual C++ 6.0 users:\\</b\\> The latest \W{http://www.microsoft.com/msdownload/platformsdk/sdkupdate/}{Platform SDK} must be installed before building. Because of flaws in the libraries distributed with Microsoft Visual C++ 6.0, not installing the Platform SDK will result in crashes when using the \R{copyfiles}{CopyFiles} command. See \W{http://forums.winamp.com/showthread.php?s=&threadid=131964}{this forum topic} for more information. Installing the \W{http://msdn.microsoft.com/vstudio/downloads/tools/ppack/download.aspx}{Processor Pack} is highly recommended to decrease the size of the installer overhead.
 
 \H{build_posix} Building on POSIX
@@ -85,6 +87,7 @@ Currently, the System plug-in \W{http://forums.winamp.com/showthread.php?s=&thre
 
 \c scons SKIPPLUGINS=System
 
+To build a native version of NSIS Menu, install \W{http://www.wxwidgets.org/}{wxWidgets 2.8} and build as usual. \c{wx-config} must be in the path.
 \H{build_nightly} Nightly Builds
 
 There is no need to manually build the latest CVS version for Windows. A \W{http://nsis.sourceforge.net/nightly/nsis.zip}{nightly build} is available. The nightly build is automatically generated every night, using the latest version of the source code from CVS. There is no official nightly build for other platforms.
diff --git a/INSTALL b/INSTALL
index 94b845d8..9191137e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -13,6 +13,8 @@ This is a trimmed version of Appendix "Building NSIS" of the documentation.
 
    * HTML Help Workshop for CHM documentation (http://msdn.microsoft.com/)
    * Cross compiler on POSIX platforms, i.e. MinGW (http://www.mingw.org/)
+   * wxWidgets 2.8 for NSIS Menu (http://www.wxwidgets.org)
+     WXWIN environment variable must be set to wxWidgets directory on Windows
 
  - Installing