Yesterday night, I looked around for a LaTeX package to turn our Savage-Dickey paper into a proper poster for Valencia 9. I found a0poster as the first output on google, so I switched to it with a reasonable result (I think!):
The main trouble with a0poster is that the columns and hence the boxes do not naturally fit the text within but that they have to be set by hand. I looked around for a while before finding a way to insert a (Ben Nevis) picture as a background before hitting this solution:
\usepackage{eso-pic}
\newcommand\BackgroundPic{
\put(0,0){
\parbox[b][\paperheight]{\paperwidth}{%
\vfill
\centering
\includegraphics[width=\paperwidth,height=\paperheight]{Nevis5.ps}%
\vfill
}}}
which works quite well. (Except for the requirement to insert postscript graphs.)