eps graphic doesn't show up in dvi output

I tried to use \munepsfig in my document, no error, no warning.

Just my image doesn't show, what could be actually wrong? Which file should I check to know the problem?

Anyway, I use a template given by someone else, it worked perfectly, this happened when I change the image.

Edit: just found out that \munepsfig{} is actually a new command, but no other than \begin{figure}\includegraphics{}\end{figure}, but it still didn't show (when I just use the normal figure), is there something wrong here?

\documentclass[11pt, a4paper]{memoir}
\usepackage{graphicx}
\begin{document}
\chapter{testing}

\begin{figure}[h]
\includegraphics[scale=0.4]{logo2.eps}
\caption{testing}
\end{figure}
\end{document}

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Somebody thinks that \includegraphics has to go inside a figure environment: it's not true. Your problem might be in incompatible formats for the figure: latex accepts only eps, while pdflatex doesn't (and accepts png, jpg and pdf). –  egreg May 10 '11 at 23:22
@zfm: We need a minimal example, including at least a pointer to the graphics file in question. –  Joseph Wright May 11 '11 at 7:04
it's very simple example I had. begin{figure}\includegraphics{file.eps}\caption{File}\end{figure}. The caption was there, the area was there, but the image wasn't, it's just a blank, white screen on the area that should be filled with the image –  zfm May 11 '11 at 9:20
@Joseph: 4shared.com/file/ot8m4BB1/logo.html 4shared.com/file/x-a5dDgi/enrollment.html (I dont know if there's a possibility to put an .eps file here) –  zfm May 11 '11 at 20:54
@zfm --- your example says \includegraphics[scale=0.4]{logo2.eps}, but the link leads to a file called logo.eps. Incorrect filenames can cause the problem you describe if TeX is running in nonstop mode. –  Ian Thompson May 13 '11 at 0:04

It may be that your graphic was correctly included, but that your dvi viewer isn't showing you the eps file. (\includegraphics inserts the eps file using a \special, and not all dvi viewers know how to handle all specials.) If you convert your dvi file to a ps file (using dvips) or to a pdf file (using dvipdf), you may well find that your graphic displays correctly.