\documentclass[a0,landscape]{a0poster}

\usepackage{mathptmx}
\usepackage[scaled=.90]{helvet}
\usepackage{courier}
\usepackage{postercols}

\title{A Sample Poster Created Using \LaTeX}
\author{Nicola Talbot\\
School of Computing Sciences\\
University of East Anglia\\
Norwich, Norfolk. NR4 7TJ
\and
Gavin Cawley\\
School of Computing Sciences\\
University of East Anglia\\
Norwich, Norfolk. NR4 7TJ}
\date{}

\begin{document}
\maketitle
\thispagestyle{empty}

\section{Introduction}
This is a sample poster.

\end{document}