\documentclass[a4paper,12pt]{report}
\usepackage{graphicx,color}
\usepackage{german,pstricks}
\begin{document}

\psset{unit=5mm}\begin{pspicture}(18,11)
\rput[bl](0,0){\includegraphics{pse.eps}}
\psline{->}(0.5,9.5)(0.5,7.2)\rput[l](0,10){Alkalimetalle}
\psline{->}(2,8)(1.5,6.2)\rput[l](2,8.5){Erdalkalimetalle}
\psline{->}(14,7)(15.5,6.2)\rput(14,7.2){Chalkogene}
\rput{15}(7.5,2.5){\psframebox*{Nebengruppen}}
{\color{white}\rput{45}(15,3.5){{Hauptgruppen}}}
\end{pspicture}

\end{document}