Package 'ediff' on Windows XP

[Torsten]

Hello,

recently I got XEmacs (21.4.19) installed on Windows XP (SP2). It is  
working, however it is not possible to start the 'ediff' package (I  
like to compare two files). I got the message:
"Searching for program: No such file or directory, diff"

In directory /pub/xemacs/packages there is obviously no 'diff' package.

On the homepage I read:
"This native Windows setup kit includes a small set of packages:
c-support, cc-mode, debug, dired, ecb, edebug, ediff,
...
Refer to the Quickstart Package Guide for installing further XEmacs  
packages to extend the editor's functionality."


Due to my understanding the packages should work without a special  
"activation" - or am I wrong? Below please find the "status" of  
packages of my installation (showing ediff as installed).

Could you help me? Many thanks in advance.

Best Regards

Torsten Keiler

----

Check done by Menu: Tools - Packages - List and Install ==>

Warning: No download sites specified.  Package index may be out of date.
          If you intend to install packages, specify download sites first.

                        Latest Installed
   Package name         Vers.  Vers.   Description
===============================================================================
- Sun                  1.16   -----  Support for Sparcworks.
- ada                  1.14   -----  Ada language support.
- apel                 1.32   -----  A Portable Emacs Library.  Used  
by XEmacs MIME support.
- auctex               1.46   -----  Basic TeX/LaTeX support.
- bbdb                 1.29   -----  The Big Brother Data Base
- build                1.14   -----  Build XEmacs from within (UNIX, Windows).
   c-support            1.22   1.22   Basic single-file add-ons for  
editing C code.
- calc                 1.26   -----  Emacs calculator
- calendar             1.23   -----  Calendar and diary support.
   cc-mode              1.45   1.45   C, C++, Objective-C, Java, CORBA  
IDL, Pike and AWK language support.
- clearcase            1.10   -----  New Clearcase Version Control for  
XEmacs (UNIX, Windows).
- cookie               1.15   -----  Spook and Yow (Zippy quotes).
- crisp                1.15   -----  Crisp/Brief emulation.
   debug                1.17   1.17   GUD, gdb, dbx debugging support.
- dictionary           1.16   -----  Interface to RFC2229 dictionary servers.
   dired                1.17   1.17   Manage file systems.
- docbookide           0.07   -----  DocBook editing support.
   ecb                  1.22   1.22   Emacs source code browser.
- ecrypto              0.20   -----  Crypto functionality in Emacs Lisp.
   edebug               1.21   1.21   An Emacs Lisp debugger.
- edict                1.16   -----  MULE: Lisp Interface to EDICT,  
Kanji Dictionary.
   ediff                1.60   1.60   Interface over GNU patch.
   edit-utils           2.32   2.32   Miscellaneous editor extensions, you prob
   edt                  1.13   -----  DEC EDIT/EDT emulation.
   efs                  1.33   1.33   Treat files on remote systems  
the same as local files.
- egg-its              1.27   -----  MULE: Wnn (4.2 and 6) support.   
SJ3 support.
   eieio                1.05   1.05   Enhanced Implementation of Emacs  
Interpreted Objects
- elib                 1.11   -----  Portable Emacs Lisp utilities library.
- emerge               1.11   -----  Another interface over GNU patch.
- erc                  0.19   -----  ERC is an Emacs InternetRelayChat client.
- escreen              1.01   -----  Multiple editing sessions withing  
a single frame (like screen).
- eshell               1.10   -----  Command shell implemented  
entirely in Emacs Lisp
- eterm                1.17   -----  Terminal emulation.
- eudc                 1.39   -----  Emacs Unified Directory Client  
(LDAP, PH).
- footnote             1.16   -----  Footnoting in mail message editing modes.
- forms                1.15   -----  Forms editing support (obsolete,  
use Widget instead).
- fortran-modes        1.05   -----  Fortran support.
- frame-icon           1.11   -----  Set up mode-specific icons for  
each frame under XEmacs
   fsf-compat           1.15   1.15   FSF Emacs compatibility files.
...