diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 57cf79dbe5..3f45031a1c 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -17,6 +17,21 @@
    past entries belonging to author(s): Viktor Szakats.
 */
 
+2009-10-03 13:21 UTC+0200 Viktor Szakats (harbour.01 syenar.hu)
+  * INSTALL
+    + Added MSVC Itanium build example.
+    + Added generic build instructions/advices for Windows x64 hosts.
+    + Added build examples for Windows x64 hosts.
+      (most of the 32-bit Windows examples work as is, so I've 
+      only added a few where there are differences and which I've 
+      tested)
+      NOTE: x64 build of mingw32-make isn't used in these 
+            examples yet.
+    ! Minor fixes to OS/2 build examples.
+
+  * ChangeLog
+    ! Few typos.
+
 2009-10-02 23:35 UTC-0800 Pritpal Bedi (pritpal@vouchcac.com)
   * contrib/hbxbp/xbpappevent.prg
   * contrib/hbxbp/xbpbrowse.prg
@@ -64,15 +79,15 @@
     + Added OS/2 GCC OMF support.
       This tries to fix resource support in hbmk2 compared to David's 
       solution. hbmk2 support is completely newly done, .mk support was imported 
-      as is, with little change in actication logic.
+      as is, with little change in activation logic.
     ! Fixed to use $(ECHOQUOTE) in some $(ECHO) command parameters.
-    ; NOTE: Until we don't add autodetection for OMF supporting GCC versions, 
+    ; NOTE: Until we add autodetection for OMF supporting GCC versions, 
             it will have to be selected manually using HB_COMPILER=gccomf.
             Notice that for GCC 4.x this is obligatory since COFF support is 
             broken in these versions.
             Additional EMX* envvar options are left as an excercise for the 
             users, I intentionally didn't document these in INSTALL, as INSTALL 
-            servers as Harbour documentation, not 3rd party tools like GCC.
+            serves as Harbour documentation, not 3rd party tools like GCC.
 
   * config/global.mk
     ! Minor in comment.
diff --git a/harbour/INSTALL b/harbour/INSTALL
index ca45e7fe36..17888418a6 100644
--- a/harbour/INSTALL
+++ b/harbour/INSTALL
@@ -626,6 +626,11 @@ HARBOUR
       mingw32-make
       ---
 
+      --- MSVC 2008 for Windows Itanium (requires preceding build for native target)
+      call "%ProgramFiles%\Microsoft Visual Studio 9.0\VC\vcvarsall.bat" x86_ia64
+      mingw32-make
+      ---
+
       --- MSVC 2008 for Windows CE ARM (requires preceding build for native target)
       set INCLUDE=%ProgramFiles%\Microsoft Visual Studio 9.0\VC\ce\include;%ProgramFiles%\Windows Mobile 5.0 SDK R2\PocketPC\Include\Armv4i
       set LIB=%ProgramFiles%\Microsoft Visual Studio 9.0\VC\ce\lib\armv4i;%ProgramFiles%\Windows Mobile 5.0 SDK R2\PocketPC\Lib\ARMV4I
@@ -797,6 +802,29 @@ HARBOUR
       set HB_BUILD_PKG=yes
       -->8--
 
+   for Windows x64 (x86_64) hosts
+   ------------------------------
+
+      Same as regular Windows, but you'll have to change %ProgramFiles% to 
+      %ProgramFiles(x86)% for 32-bit and mixed tools, you can build for 
+      both x86 and x64 without building a native target first, and potential 
+      differences in compilers to use native binaries if they are available.
+
+      --- MSVC 2008
+      call "%ProgramFiles(x86)%\Microsoft Visual Studio 9.0\VC\vcvarsall.bat"
+      mingw32-make
+      ---
+
+      --- MSVC 2008 for Windows x86-64
+      call "%ProgramFiles(x86)%\Microsoft Visual Studio 9.0\VC\vcvarsall.bat" amd64
+      mingw32-make
+      ---
+
+      --- MSVC 2008 for Windows Itanium (requires preceding build for native target)
+      call "%ProgramFiles(x86)%\Microsoft Visual Studio 9.0\VC\vcvarsall.bat" x86_ia64
+      mingw32-make
+      ---
+
    for MS-DOS hosts
    ----------------
 
@@ -836,12 +864,12 @@ HARBOUR
    for OS/2 hosts
    --------------
 
-      --- GCC 3.3.4
+      --- GCC 3.3.4 and GCC 3.3.5
       C:\usr\bin\gccenv.cmd
       os2-make
 
       --- GCC 4.x
-      C:\usr\bin\gccenv.cmd
+      C:\usr\local433\gccenv.cmd
       set HB_COMPILER=gccomf
       os2-make