diff is a good choice, but it requires (or is at least a lot happier after)
converting the files to bytestream.  You'll probably want to run it with the
-c option.

Ted
--
Ted Ashton ([log in to unmask]), Info Sys, Southern Adventist University
          ==========================================================
It is India that gave us the ingenious method of expressing all numbers by
means of ten symbols, each symbol receiving a value of position as well as
an absolute value; a profound and important idea which appears so simple to
us now that we ignore its true merit. But its very simplicity and the great
ease which it has lent to computations put our arithmetic in the first rank
of useful inventions; and we shall appreciate the grandeur of the
achievement the more when we remember that it escaped the genius of
Archimedes and Apollonius, two of the greatest men produced by antiquity.
                        -- de Laplace, Pierre-Simon (1749 - 1827)
          ==========================================================
         Deep thoughts to be found at http://www.southern.edu/~ashted