diff --git a/CMakeCPack.cmake b/CMakeCPack.cmake
index aa993cfa0..c3c25f560 100644
--- a/CMakeCPack.cmake
+++ b/CMakeCPack.cmake
@@ -24,11 +24,7 @@ IF(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
 
     INCLUDE(${CMake_SOURCE_DIR}/Modules/InstallRequiredSystemLibraries.cmake)
   ENDIF(EXISTS "${CMAKE_ROOT}/Modules/InstallRequiredSystemLibraries.cmake")
-  # Set the options file that needs to be included inside CMakeCPackOptions.cmake
-  SET(QT_DIALOG_CPACK_OPTIONS_FILE ${CMake_BINARY_DIR}/Source/QtDialog/QtDialogCPack.cmake)
-  CONFIGURE_FILE("${CMake_SOURCE_DIR}/CMakeCPackOptions.cmake.in"
-    "${CMake_BINARY_DIR}/CMakeCPackOptions.cmake" @ONLY)
-  SET(CPACK_PROJECT_CONFIG_FILE "${CMake_BINARY_DIR}/CMakeCPackOptions.cmake")
+
   SET(CPACK_PACKAGE_DESCRIPTION_SUMMARY "CMake is a build tool")
   SET(CPACK_PACKAGE_VENDOR "Kitware")
   SET(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/Copyright.txt")
@@ -36,6 +32,25 @@ IF(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
   SET(CPACK_PACKAGE_VERSION "${CMake_VERSION}")
   SET(CPACK_PACKAGE_INSTALL_DIRECTORY "CMake ${CMake_VERSION_MAJOR}.${CMake_VERSION_MINOR}")
   SET(CPACK_SOURCE_PACKAGE_FILE_NAME "cmake-${CMake_VERSION}")
+
+  # Make this explicit here, rather than accepting the CPack default value,
+  # so we can refer to it:
+  SET(CPACK_PACKAGE_NAME "${CMAKE_PROJECT_NAME}")
+
+  # Installers for 32- vs. 64-bit CMake:
+  #  - Root install directory (displayed to end user at installer-run time)
+  #  - "NSIS package/display name" (text used in the installer GUI)
+  #  - Registry key used to store info about the installation
+  IF(CMAKE_CL_64)
+    SET(CPACK_NSIS_INSTALL_ROOT "$PROGRAMFILES64")
+    SET(CPACK_NSIS_PACKAGE_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY} (Win64)")
+    SET(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "${CPACK_PACKAGE_NAME} ${CPACK_PACKAGE_VERSION} (Win64)")
+  ELSE()
+    SET(CPACK_NSIS_INSTALL_ROOT "$PROGRAMFILES")
+    SET(CPACK_NSIS_PACKAGE_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY}")
+    SET(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "${CPACK_PACKAGE_NAME} ${CPACK_PACKAGE_VERSION}")
+  ENDIF()
+
   IF(NOT DEFINED CPACK_SYSTEM_NAME)
     # make sure package is not Cygwin-unknown, for Cygwin just
     # cygwin is good for the system name
@@ -47,11 +62,12 @@ IF(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
   ENDIF(NOT DEFINED CPACK_SYSTEM_NAME)
   IF(${CPACK_SYSTEM_NAME} MATCHES Windows)
     IF(CMAKE_CL_64)
-      SET(CPACK_SYSTEM_NAME win64-${CMAKE_SYSTEM_PROCESSOR})
+      SET(CPACK_SYSTEM_NAME win64-x64)
     ELSE(CMAKE_CL_64)
-      SET(CPACK_SYSTEM_NAME win32-${CMAKE_SYSTEM_PROCESSOR})
+      SET(CPACK_SYSTEM_NAME win32-x86)
     ENDIF(CMAKE_CL_64)
   ENDIF(${CPACK_SYSTEM_NAME} MATCHES Windows)
+
   IF(NOT DEFINED CPACK_PACKAGE_FILE_NAME)
     # if the CPACK_PACKAGE_FILE_NAME is not defined by the cache
     # default to source package - system, on cygwin system is not 
@@ -63,15 +79,17 @@ IF(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
         "${CPACK_SOURCE_PACKAGE_FILE_NAME}-${CPACK_SYSTEM_NAME}")
     ENDIF(CYGWIN)
   ENDIF(NOT DEFINED CPACK_PACKAGE_FILE_NAME)
+
   SET(CPACK_PACKAGE_CONTACT "cmake@cmake.org")
+
   IF(UNIX)
     SET(CPACK_STRIP_FILES "bin/ccmake;bin/cmake;bin/cpack;bin/ctest")
     SET(CPACK_SOURCE_STRIP_FILES "")
     SET(CPACK_PACKAGE_EXECUTABLES "ccmake" "CMake")
   ENDIF(UNIX)
-# cygwin specific packaging stuff
+
+  # cygwin specific packaging stuff
   IF(CYGWIN)
-    
     # setup the cygwin package name
     SET(CPACK_PACKAGE_NAME cmake)
     # setup the name of the package for cygwin cmake-2.4.3
@@ -93,6 +111,13 @@ IF(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
     # this file uses some of the package file name variables
     INCLUDE(Utilities/Release/Cygwin/CMakeLists.txt)
   ENDIF(CYGWIN)
+
+  # Set the options file that needs to be included inside CMakeCPackOptions.cmake
+  SET(QT_DIALOG_CPACK_OPTIONS_FILE ${CMake_BINARY_DIR}/Source/QtDialog/QtDialogCPack.cmake)
+  CONFIGURE_FILE("${CMake_SOURCE_DIR}/CMakeCPackOptions.cmake.in"
+    "${CMake_BINARY_DIR}/CMakeCPackOptions.cmake" @ONLY)
+  SET(CPACK_PROJECT_CONFIG_FILE "${CMake_BINARY_DIR}/CMakeCPackOptions.cmake")
+
   # include CPack model once all variables are set
   INCLUDE(CPack)
 ENDIF(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
diff --git a/CMakeCPackOptions.cmake.in b/CMakeCPackOptions.cmake.in
index a94fa7223..69a150851 100644
--- a/CMakeCPackOptions.cmake.in
+++ b/CMakeCPackOptions.cmake.in
@@ -3,8 +3,10 @@
 # in this file.  
 
 if(CPACK_GENERATOR MATCHES "NSIS")
+  SET(CPACK_NSIS_INSTALL_ROOT "@CPACK_NSIS_INSTALL_ROOT@")
+
   # set the install/unistall icon used for the installer itself
-  # There is a bug in NSI that does not handle full unix paths properly. 
+  # There is a bug in NSI that does not handle full unix paths properly.
   SET(CPACK_NSIS_MUI_ICON "@CMake_SOURCE_DIR@/Utilities/Release\\CMakeLogo.ico")
   SET(CPACK_NSIS_MUI_UNIICON "@CMake_SOURCE_DIR@/Utilities/Release\\CMakeLogo.ico")
   # set the package header icon for MUI
@@ -21,11 +23,11 @@ if(CPACK_GENERATOR MATCHES "NSIS")
     "doc/cmake-@CMake_VERSION_MAJOR@.@CMake_VERSION_MINOR@/cpack.html" "CPack Help"
     "http://www.cmake.org" "CMake Web Site"
     )
-  # Use the icond from cmake-gui for add-remove programs
+  # Use the icon from cmake-gui for add-remove programs
   SET(CPACK_NSIS_INSTALLED_ICON_NAME "bin\\cmake-gui.exe")
 
-  SET(CPACK_NSIS_DISPLAY_NAME "CMake @CMake_VERSION_MAJOR@.@CMake_VERSION_MINOR@ a cross-platform, open-source build system")
-  SET(CPACK_NSIS_PACKAGE_NAME "CMake @CMake_VERSION_MAJOR@.@CMake_VERSION_MINOR@")
+  SET(CPACK_NSIS_PACKAGE_NAME "@CPACK_NSIS_PACKAGE_NAME@")
+  SET(CPACK_NSIS_DISPLAY_NAME "@CPACK_NSIS_PACKAGE_NAME@, a cross-platform, open-source build system")
   SET(CPACK_NSIS_HELP_LINK "http://www.cmake.org")
   SET(CPACK_NSIS_URL_INFO_ABOUT "http://www.kitware.com")
   SET(CPACK_NSIS_CONTACT @CPACK_PACKAGE_CONTACT@)