I've gotten a basic export to Prosper working for a presentation I'm
writing to give this weekend.

Here is the extra portion for .emacs:
(setq org-export-latex-classes (cons '("prosper"
     "% BEGIN Prosper Defaults
\\documentclass[pdf, contemporain]{prosper}
\\usepackage[utf8]{inputenc}
\\usepackage[T1]{fontenc}
\\usepackage[colorlinks,linkcolor=blue]{hyperref}
% END Prosper Defaults

"
     ("\\begin{slide}{%s}" . "\\begin{slide}{%s}"))
                                     org-export-latex-classes))

Unfortunately it doesn't appear that I can add a closure for the
slide, so a manual "\end{slide}" must go at the end of each.

Attached is the sample presentation, and it compiles after export
with:

latex Backups.tex && dvips Backups.dvi && ps2pdf Backups.ps

The pdflatex command doesn't work with Prosper.

Enjoy!

------------------------------------------------------------------
Russell Adams                            RLAdams@AdamsInfoServ.com

PGP Key ID:     0x1160DCB3           http://www.adamsinfoserv.com/

Fingerprint:    1723 D8CA 4280 1EC9 557F  66E8 1154 E018 1160 DCB3