% DDLP'98 - Proceedings
% LaTeX format for the final version

\documentstyle[11pt]{article}
\pagestyle{plain}                              %%% PAGE NUMBERS !
\topmargin -0.7cm
\textheight 22.5cm \textwidth 15.5cm
\evensidemargin 0.2cm \oddsidemargin 0.2cm
\footskip 2cm

\begin{document}
\setcounter{page}{123}

% ---- Your text 

\end{document}