diff --git a/Lib/idlelib/CREDITS.txt b/Lib/idlelib/CREDITS.txt
index 30561a9ea9f..456079b8ca0 100644
--- a/Lib/idlelib/CREDITS.txt
+++ b/Lib/idlelib/CREDITS.txt
@@ -2,9 +2,9 @@ Guido van Rossum, as well as being the creator of the Python language, is the
 original creator of IDLE.  Other contributors prior to Version 0.8 include
 Mark Hammond, Jeremy Hylton, Tim Peters, and Moshe Zadka.
 
-IDLE's recent development has been carried out in the IDLEfork project.
-The objective was to develop a version of IDLE which had an execution
-environment which could be initialized prior to each run of user code.
+IDLE's recent development was carried out in the SF IDLEfork project. The
+objective was to develop a version of IDLE which had an execution environment
+which could be initialized prior to each run of user code.
 
 The IDLEfork project was initiated by David Scherer, with some help from Peter
 Schneider-Kamp and Nicholas Riley.  David wrote the first version of the RPC
@@ -12,7 +12,7 @@ code and designed a fast turn-around environment for VPython.  Guido developed
 the RPC code and Remote Debugger currently integrated in IDLE.  Bruce Sherwood
 contributed considerable time testing and suggesting improvements.
 
-Besides David and Guido, the main developers who have been active on IDLEfork
+Besides David and Guido, the main developers who were active on IDLEfork
 are Stephen M. Gava, who implemented the configuration GUI, the new
 configuration system, and the About dialog, and Kurt B. Kaiser, who completed
 the integration of the RPC and remote debugger, implemented the threaded
@@ -24,8 +24,9 @@ Noam Raphael (Code Context, Call Tips, many other patches), and Chui Tey (RPC
 integration, debugger integration and persistent breakpoints).
 
 Scott David Daniels, Tal Einat, Hernan Foffani, Christos Georgiou,
-Jim Jewett, Martin v. Löwis, Jason Orendorff, Josh Robb, Nigel Rowe,
-Bruce Sherwood, and Jeff Shute have submitted useful patches.  Thanks, guys!
+Jim Jewett, Martin v. Löwis, Jason Orendorff, Guilherme Polo, Josh Robb,
+Nigel Rowe, Bruce Sherwood, and Jeff Shute have submitted useful patches.
+Thanks, guys!
 
 For additional details refer to NEWS.txt and Changelog.
 
diff --git a/Lib/idlelib/EditorWindow.py b/Lib/idlelib/EditorWindow.py
index 104b63baf4a..6744c911af2 100644
--- a/Lib/idlelib/EditorWindow.py
+++ b/Lib/idlelib/EditorWindow.py
@@ -22,6 +22,16 @@ import macosxSupport
 # The default tab setting for a Text widget, in average-width characters.
 TK_TABWIDTH_DEFAULT = 8
 
+def _sphinx_version():
+    "Format sys.version_info to produce the Sphinx version string used to install the chm docs"
+    major, minor, micro, level, serial = sys.version_info
+    release = '%s%s' % (major, minor)
+    if micro:
+        release += '%s' % micro
+    if level != 'final':
+        release += '%s%s' % (level[0], serial)
+    return release
+
 def _find_module(fullname, path=None):
     """Version of imp.find_module() that handles hierarchical module names"""
 
@@ -64,15 +74,13 @@ class EditorWindow(object):
                                            'Doc', 'index.html')
             elif sys.platform[:3] == 'win':
                 chmfile = os.path.join(sys.prefix, 'Doc',
-                                       'Python%d%d.chm' % sys.version_info[:2])
+                                       'Python%s.chm' % _sphinx_version())
                 if os.path.isfile(chmfile):
                     dochome = chmfile
-
             elif macosxSupport.runningAsOSXApp():
                 # documentation is stored inside the python framework
                 dochome = os.path.join(sys.prefix,
                         'Resources/English.lproj/Documentation/index.html')
-
             dochome = os.path.normpath(dochome)
             if os.path.isfile(dochome):
                 EditorWindow.help_url = dochome
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 0b6fa61b75a..2d74be4e3ff 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -1,7 +1,22 @@
-What's New in IDLE 2.6a3?
-=========================
+What's New in IDLE 2.6.3rc1?
+============================
 
-*Release date: XX-XXX-2008*
+*Release date: XX-XXX-2009*
+
+- Windows: Version string for the .chm help file changed, file not being
+  accessed  Patch 5783 Guilherme Polo
+
+What's New in IDLE 2.6.2rc1?
+============================
+
+*Release date: 06-Apr-2009*
+
+- Issue #3549: On MacOS the preferences menu was not present
+
+What's New in IDLE 2.6?
+=======================
+
+*Release date: 01-Oct-2008*
 
 - Issue #2665: On Windows, an IDLE installation upgraded from an old version
   would not start if a custom theme was defined.
@@ -23,7 +38,7 @@ What's New in IDLE 2.6a1?
   in the config dialog would cause non-Python files to be colored as if they
   were Python source; improve use of ColorDelagator.  Patch 1334. Tal Einat.
 
-- ScriptBinding event handlers weren't returning 'break'. Patch 2050, Tal Einat.
+- ScriptBinding event handlers weren't returning 'break'. Patch 2050, Tal Einat
 
 - There was an error on exit if no sys.exitfunc was defined. Issue 1647.
 
diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index d045694ca9f..ba9dbbd9bb8 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1 @@
-IDLE_VERSION = "2.6.2"
+IDLE_VERSION = "2.6.3rc1"