Update Windows INSTALL notes.

INSTALL

@@ -46,15 +46,102 @@ the include folder to the project's User Header Search Paths.
 Windows
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-For building a static library on Windows with Visual Studio 2010, cd to
-the TagLib folder then:
+It's Windows ... Systems vary!
+This means you need to adjust things to suit your system, especially paths.
 
-  cmake -DENABLE_STATIC=ON -DENABLE_STATIC_RUNTIME=ON -G "Visual Studio 10" ...
+Tested with:
+  Microsoft Visual Studio 2010
+  Gcc by mingw-w64.sf.net v4.6.3 (Strawberry Perl 32b)
+  MinGW32-4.8.0
+
+Requirements:
+  1. Tool chain, Build Environment, Whatever ya want to call it ...
+     Installed and working.
+  2. CMake program. (Available at: www.cmake.org)
+     Installed and working.
+
+Optional:
+  1. Zlib library.
+     Available in some Tool Chains, Not all.
+     Search the web, Take your choice.
+
+Useful configuration options used with CMake (GUI and/or Command line):
+  Any of the ZLIB_ variables may be used at the command line, ZLIB_ROOT is only
+  available on the Command line.
+  ZLIB_ROOT=            Where to find ZLib's root directory.
+                        Assumes parent of: \include and \lib.
+  ZLIB_INCLUDE_DIR=     Where to find ZLib's Include directory.
+  ZLIB_LIBRARY=         Where to find ZLib's Library.
+  CMAKE_INSTALL_PREFIX= Where to install Taglib.
+  CMAKE_BUILD_TYPE=     Release, Debug, etc ... (Not available in MSVC)
+
+The easiest way is at the Command Prompt.
+  MSVS Command Prompt for MSVS Users.
+  (Batch file and/or Shortcuts are your friends)
+
+  1. Build the Makefiles:
+       Replace "GENERATOR" with your needs.
+       For MSVS : "Visual Studio X" where X is the single or two digit version.
+       For MinGW: "MinGW Makefiles"
+
+       C:\GitRoot\taglib> cmake -G "GENERATOR" -DCMAKE_INSTALL_PREFIX=C:\Libraries\taglib
+
+     Or use the CMake GUI:
+       1. Open CMake GUI.
+       2. Set Paths.
+          "Where is the source code" and "Where to build the binaries"
+          Example, Both would be: C:\GitRoot\taglib
+       3. Tick: Advanced
+       4. Select: Configure
+       5. Select: Generator
+       6. Tick: Use default native compilers
+       7. Select: Finish
+       Wait until done.
+       5. If using ZLib, Scroll down.
+          (to the bottom of the list of options ... should go over them all)
+          1. Edit: ZLIB_INCLUDE_DIR
+          2. Edit: ZLIB_LIBRARY
+       6. Select: Generate
+
+  2. Build the project:
+       MSVS:
+         C:\GitRoot\taglib> msbuild all_build.vcxproj /p:Configuration=Release
+           OR (Depending on MSVS version or personal choice)
+         C:\GitRoot\taglib> devenv all_build.vcxproj /build Release
+       MinGW:
+         C:\GitRoot\taglib> gmake
+           OR (Depending on MinGW install)
+         C:\GitRoot\taglib> mingw32-make
+
+     Or in the MSVS GUI:
+       1. Open MSVS.
+       2. Open taglib solution.
+       3. Set build type to: Release (look in the tool bars)
+       2. Hit F7 to build the solution. (project)
+
+  3. Install the project:
+       (Change 'install' to 'uninstall' to uninstall the project)
+       MSVS:
+         C:\GitRoot\taglib> msbuild install.vcxproj
+           OR (Depending on MSVC version or personal choice)
+         C:\GitRoot\taglib> devenv install.vcxproj
+       MinGW:
+         C:\GitRoot\taglib> gmake install
+           OR (Depending on MinGW install)
+         C:\GitRoot\taglib> mingw32-make install
+
+     Or in the MSVS GUI:
+       1. Open project.
+       2. Open Solution Explorer.
+       3. Right Click: INSTALL
+       4. Select: Project Only
+       5. Select: Build Only INSTALL
+
+To build a static library enable the following two options with CMake.
+  -DENABLE_STATIC=ON -DENABLE_STATIC_RUNTIME=ON
   
 Including ENABLE_STATIC_RUNTIME=ON indicates you want TagLib built using the
 static runtime library, rather than the DLL form of the runtime.
-CMake will create a Visual Studio solution, taglib.sln that you can open and
-build as normal.  
 
 Unit Tests
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