Python 2.4 - Help does not work in Windows

[stuart_white_ at hotmail.com]

I've just upgraded from Python 2.3.3 to Python 2.4.2, and, although the
new version of Python seems to be running correctly, I can't seem
access the help from the interpreter.

On Python 2.3.3
---------------
Python 2.3.3 (#51, Dec 18 2003, 20:22:39) [MSC v.1200 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
>>> time.ctime()
'Wed Jan 04 12:59:13 2006'
>>> help(time)
Help on built-in module time:

NAME
    time - This module provides various functions to manipulate time
values.

... etc ...

On Python 2.4.2
---------------
Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
>>> time.ctime()
'Wed Jan 04 13:01:22 2006'
>>> help(time)
cannot import name warn

I get this warning for all modules which I've tried. I guess this is an
installation problem, and have tried uninstalling and re-installing but
that gives me the same results.

Could anyone give me some pointers on where I might look to debug this
problem? In case it's any help, I'm running Windows XP SP2, and have
installed both Python2.3 and Python 2.4 on the same system. Could this
be causing some conflict?

Any help would be greatly appreciated!