LaTeX Forum

\documentclass[portrait,a0]{a0poster}
\usepackage{xspace}
\usepackage{graphics}
\usepackage{SIunits}
\usepackage{pstricks,pst-grad,pst-node}
\usepackage{epsfig,rotating,floatflt,graphics,wrapfig,times,fleqn,shadow,fancybox}
\usepackage[absolute]{textpos}

\begin{document}

\begin{pspicture}(0cm,0cm)(10cm,10cm)
\psframe[linecolor=black,fillcolor=black,fillstyle=solid](0cm,0cm)(10cm,10cm)
\end{pspicture} 

\begin{center}
\begin{minipage}[c][10cm][c]{0.78\textwidth}
  \begin{center}
    {\veryHuge \bf \textcolor{blue}{This is my poster}}\\[20mm]
  \end{center}
\end{minipage}
\end{center}

\end{document}

\listfiles
\documentclass[portrait,a0]{a0poster}
\usepackage{pstricks}

\begin{document}

\begin{pspicture}(10,10)
\psframe*(10,10)
\end{pspicture}

\begin{center}
\begin{minipage}[c][10cm][c]{0.78\textwidth}
  \begin{center}
    {\veryHuge \bf \textcolor{blue}{This is my poster}}
  \end{center}
\end{minipage}
\end{center}

\end{document}