In order  to use  the "Warsaw"  Beamer theme with  frame numbers  on the
bottom of each frame, I had to slightly modify some theme files.

Here are  the modified files  I created, in their  respective directory,
which  you must  put in  the proper  directory on  your system ;  on  my
computer,  under Debian  GNU/Linux (Etch),  with the  LaTeX distribution
teTeX, I put them into the directory :

	/usr/share/texmf/tex/latex/beamer/themes

You may have to use super-user privileges to do this. I had then to make
the distribution understand the new files were available, by running :

	# texhash

This creates a "new" Beamer theme, called "MyWarsaw", which is in fact a
copy of the  "Warsaw" Beamer theme containing also frame  numbers at the
bottom of each frame.

You will also be able to use the original "Warsaw" Beamer theme just the
way you did before.

This  procedure also  works  with  Ubuntu  Gutsy Gibbon  and TeXLive.  I
couldn't test this on other systems.

-- 
Joël Lopes Da Silva > LeJo <