[OS X TeX] "Non-PDF special ignored"

[ewan.Delanoy at math.unicaen.fr]

                                          Hello all,

  this is about a very common problem : I'm trying to use
eepics for graphics in my .tex file, the console
displays a "Non-PDF special ignored" message, and axes are drawn but
circles are not
(the code is below).

  Before posting this question to the texonmacosx list I googled
"eepic Non-PDF special ignored" (with some 1000 results),
but I could not find how to fix my problem. I did not find
the TeX FAQ item
at http://www.tex.ac.uk/cgi-bin/texfaq2html?label=nonpdfsp
very helpful either (if I understood it correctly, I should
replace \usepackage[dvips]{graphicx} with \usepackage{graphicx}. This
changed nothing).

        Hopefully someone on this list will kindly answer my stupid
question ...

                                                                TIA,

                                                                   Ewan

**************************************************************************************

\documentclass{article}
\usepackage[dvips]{graphicx}
\usepackage{eepic}

\begin{document}

\setlength{\unitlength}{0.5cm}

\begin{picture}(18,11)(-10,-5)
\put(-10,0){\vector(1,0){18}}
\put(0,-5){\vector(0,1){11}}
\put(-5,0){\circle{8}}
\put(5,0){\circle{4}}
\put(1.2,2.4){\circle{6}}
\put(0,0){\circle{1}}
\put(0,0){\circle{3}}
\end{picture}

\end{document}