[pdftex] eps files and pdflatex

[Alfred K. K. Wong]

Greetings:

I encountered the following problem: a latex file in the seminar class
that incorporates eps graphics was successfully compiled and printed.
However, pdflatex complains about the ".eps" extension being unknown.
Any advice is appreciated.  The latex file reads

\documentclass[a4]{seminar}

\usepackage{epsfig}
\usepackage{pstricks}
\usepackage{pst-node}
\graphicspath{{./figures/}}

\begin{document}

\begin{slide}
  \includegraphics[width=0.75in,height=1.5in]{present.eps}
\end{slide}

\end{document}

Thanks.

Sincerely,

Alfred Wong
Department of Electrical & Electronic Engineering
The University of Hong Kong