Hello Jerome
the LaTeX package `epstopdf' allows to convert PostScript files on the fly: you should find it at your favorite CTAN site in the folder: CTAN:/macros/latex/contrib/supported/oberliek or somethinh lik that.
This looks very promising, I have to check it out. But wait... this should be "oberDiek" not "oberLiek".
Thanks joerg -- Gib GATES keine Chance!