Put picture in absolute position in Latex (x,y)

\usepackage[dvipdfm]{graphicx}
\usepackage{mediabb} %for putting in jpg images
\def\Put(#1,#2)#3{\leavevmode\makebox(0,0){\put(#1,#2){#3}}}
...

\begin{document}
\Put(320,-254){\includegraphics[height=3.5cm]{p.jpg}}

% 320 is x to the right at increasing value

% -254 is y to bottom at decreasing value