[h-e-w] Ediff in Emacs

[Silqun Leung]

Hello,

    I am new to Emacs and wish to use the powerful ediff tool found in Emacs.  I recently installed GNU Emacs 21.2.1(i386-msvc-nt5.1.2600) and am having problems with Ediff.  When I try and put (require 'ediff) into my .emacs file it says it can't find the "diff" file or folder at startup.  The same problem happens when I try and run from the GUI, however if I run setup once it works fine.  The real concern occurs when I try and compare files; it complains about ediff-setup-diff-region not being defined.  Where/how/what do I define this so that I can use ediff?

 

Thank you,

Silqun