\documentclass[12pt,a4paper]{article}% run with dvips
\usepackage{cmap}
\usepackage[tiling]{pst-fill}
\usepackage{pst-text}
\usepackage{pst-char}
\usepackage{pst-grad}
\usepackage{pst-plot}
\usepackage[cp1256]{inputenc}%arawin2,8859-6
%\usepackage[maghribi]{arabic}%mashriqi
\usepackage[arabic,english]{babel}
\usepackage{poetry,arabnovowel}%,,ngermancalc,ftoday,scalefnt,katibfonts,katibchars,sectsty

\usepackage[landscape,dvips]{geometry}
\pagestyle{empty}
\begin{document}

\vspace*{6cm}
\DeclareFixedFont{\sf}{T1}{pbk}{b}{n}{12cm}
\DeclareFixedFont{\tr}{LAE}{TraditionalArabic}{m}{n}{8mm}
\DeclareFixedFont{\mtn}{LAE}{aealmothnna}{m}{n}{10cm}
\psboxfill{\blue\AR{\tr نظام العربي}}
\begin{pspicture}(0,0)(18,3)
  \centerline{%
    \pscharpath[linestyle=none,gradbegin=magenta,gradend=cyan,
                fillstyle=gradient,gradangle=-30,
                gradmidpoint=0.5,addfillstyle=boxfill,
                fillangle=30,fillsep=0.6mm]%
                {\rput[b](-.8,-2){\AR{\mtn العربي}}}}
\end{pspicture}


%\vspace*{3cm}
%\pstextpath(0,-1ex){\psplot[linestyle=none]{0}{21}{x 56 mul sin}}{%
%  \Huge\blue Spielereien und ernsthafte Betrachtungen zu 
%  \textcolor{red}{PSTricks} bei \textsc{Lehmanns}
%}
\end{document}