xelatex and pstricks

Question

I am using miktex 2.9 with texworks & windows 7 ultimate SP1 to compile my code. I am compiling using xelatex however, my code is not compiling. What should I do ? Here is my code:

\documentclass{article} 
\usepackage{pstricks}
\begin{document}    
\begin{pspicture}(-0.5,0)(2.5,1)
\psdots(0,0)(2,0)(1,1)
\end{pspicture}
\end{document}