provide more details of compilation on windows

README.md

@@ -1,6 +1,21 @@
 # eegsynth-matlab
 Converting real-time EEG into sounds and music
 
+## Platform specific notes for Microsoft Windows
+Precompiled mex file are provided, these are linked to a static version of portmidi.  To
+use these mex files in MATLAB, you might have to install the Microsoft Visual C++ 2010
+Redistributable Package, which is available from [1]. This package contains some
+additional system libraries that are used by MSVC 2010.
+
+Compiling the mex files from scratch requires that you have a C/C++ compiler installed. We
+have used (and only tested with) Microsoft Visual C++ Express 2010, which is available
+from [2]. COmpiling 64-bit mex files furthermore requires that you have the Windows
+Software Development Kit version 7.1 (see [3]).
+
+[1] https://www.microsoft.com/en-us/download/details.aspx?id=5555
+[2] https://www.visualstudio.com/en-us/downloads
+[3] http://stackoverflow.com/questions/1865069/how-to-compile-a-64-bit-application-using-visual-c-2010-express
+
 ## Platform specific notes for Mac OS X
 Compilation of the mex files requires that portmidi is present. This can be downloaded
 from http://portmedia.sourceforge.net/portmidi. Compilation of portmidi requires cmake.
@@ -10,13 +25,5 @@ install portmidi").
 Furthermore, for compilation you probably need to update the library path settings in
 compile\_midi.m
 
-## Platform specific notes for Microsoft Windows
-Precompiled mex file are provided, these are linked to a static version of portmidi.  To
-use these mex files in MATLAB, you might have to install the Microsoft Visual C++ 2010
-Redistributable Package, which is available from [1]. This package contains some
-additional system libraries that are used by MSVC 2010.
-
-[1] https://www.microsoft.com/en-us/download/details.aspx?id=5555
-
 ## Platform specific notes for Linux
 Compilation on Linux requires the ALSA libraries to be installed.