http://www.microsoft.com/downloads/details.aspx?familyid=86ce6052-d7f4-4aeb-9b7a-94635beebdda&displaylang=en

Labels must always come after the caption!

Example:

\begin{table}[!h]
\sffamily{
\begin{tabularx}{\textwidth}{|l|X|c|}
text1 & text2 \\
\end{tabularx}
}
\caption{Texts.}
\label{tab:texts}
\end{table}