\documentclass[11pt,a4paper]{article}
\usepackage{xunicode}
\usepackage{xltxtra}

\begin{document}

\begin{table}[h]
	\centering
	\begin{tabular}{| c | c | c |}
		\hline
		foo & bar & baz \\
		\hline
	\end{tabular}
	\caption{Caption.}
\end{table}

\end{document}