diff --git a/vldb07/costhashingbuckets.tex b/vldb07/costhashingbuckets.tex
index 3a624ce..610ab6d 100755
--- a/vldb07/costhashingbuckets.tex
+++ b/vldb07/costhashingbuckets.tex
@@ -155,7 +155,7 @@ fluctuation. However, the fluctuation also grows linearly with $n$.
 \begin{figure}[htb]
 \vspace{-2mm}
 \begin{center}
-\scalebox{0.4}{\includegraphics{figs/bmz_temporegressao.eps}}
+\scalebox{0.4}{\includegraphics{figs/bmz_temporegressao}}
 \caption{Time versus number of keys in $S$ for the internal memory based algorithm.
 The solid line corresponds to a linear regression model.}
 \label{fig:bmz_temporegressao}
diff --git a/vldb07/partitioningthekeys.tex b/vldb07/partitioningthekeys.tex
index e9a48c4..aeaae9b 100755
--- a/vldb07/partitioningthekeys.tex
+++ b/vldb07/partitioningthekeys.tex
@@ -82,7 +82,7 @@ and $N$, and so on.
 \begin{figure}[ht]
 \centering
 \begin{picture}(0,0)%
-\includegraphics{figs/brz-partitioning.ps}%
+\includegraphics{figs/brz-partitioning}%
 \end{picture}%
 \setlength{\unitlength}{4144sp}%
 %
diff --git a/vldb07/performancenewalgorithm.tex b/vldb07/performancenewalgorithm.tex
index 6911282..9cddc46 100755
--- a/vldb07/performancenewalgorithm.tex
+++ b/vldb07/performancenewalgorithm.tex
@@ -89,7 +89,7 @@ variation.
 
 \begin{figure}[htb]
 \begin{center}
-\scalebox{0.4}{\includegraphics{figs/brz_temporegressao.eps}}
+\scalebox{0.4}{\includegraphics{figs/brz_temporegressao}}
 \caption{Time versus number of keys in $S$ for our algorithm. The solid line corresponds to 
 a linear regression model.}
 \label{fig:brz_temporegressao}
diff --git a/vldb07/thealgorithm.tex b/vldb07/thealgorithm.tex
index 1fb256f..673544b 100755
--- a/vldb07/thealgorithm.tex
+++ b/vldb07/thealgorithm.tex
@@ -16,7 +16,7 @@ algorithm: the partitioning step and the searching step.
 \begin{figure}[ht]
 \centering
 \begin{picture}(0,0)%
-\includegraphics{figs/brz.ps}%
+\includegraphics{figs/brz}%
 \end{picture}%
 \setlength{\unitlength}{4144sp}%
 %
diff --git a/vldb07/vldb.tex b/vldb07/vldb.tex
index 618c108..f3eee30 100644
--- a/vldb07/vldb.tex
+++ b/vldb07/vldb.tex
@@ -45,7 +45,7 @@
 \usepackage[latin1]{inputenc}
 \usepackage{amssymb}
 
-%\DeclareGraphicsExtensions{.png} 
+\DeclareGraphicsExtensions{.png} 
 %
 % \usepackage{mathptmx}      % use Times fonts if available on your TeX system
 %