diff -r 2ef2d3a5cd2d -r a494b54b6ed3 mercurial/pure/osutil.py
--- a/mercurial/pure/osutil.py	Wed Aug 10 13:40:01 2011 -0500
+++ b/mercurial/pure/osutil.py	Mon Aug 08 14:32:27 2011 +0900
@@ -73,7 +73,7 @@
             # find_msvcrt was introduced in Python 2.6
             return ctypes.util.find_msvcrt()
         except AttributeError:
-            return 'msvcr80.dll' # CPython 2.5
+            return 'msvcr71.dll' # CPython 2.5 and 2.4
 
     _crt = ctypes.PyDLL(_crtname())