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Thank you for responding, here are some code/files

I use in the tex file

\begin{figure}[ht]
\begin{center}
\includegraphics[ width=0.5\columnwidth]{test0.eps} \\
\caption{Geometry for signal measurement on element $i$.
\label{fig:Japp3}}
\end{center}
\end{figure}

and have attached the pdf ...

I'm using MikTex 2.7 fully updated, with winedt on a windows vista (32 bit) machine. My problem is when I include eps files that I have changed the bounding box (using GSview), the white space that appeared in the original figure can block out the text above the figure in all the dvi, ps and pdf ...