Why can't I scale my image?

I'm using the graphics package and I can insert my graphic into the document without any difficulty, apart from the fact that it's huge!

I am using the following command:

\documentclass{article}

\usepackage{graphics}

\begin{document}

\begin{figure}[b]

\centering

\includegraphics{cinema}

\caption{Fig. 1: Simple Past}
\end{figure}

\end{document}


But when I insert the scaling option: [scale=0.75] etc. It won't work and I get the message

 Runaway argument?
scale=0.75]{cinema} \caption {Fig. 1: Simple Past} \end {figure}
! Paragraph ended before \Gin@iii was complete.
\par

-
@percusse Thanks for the edit. –  Danger Fourpence Dec 12 '12 at 13:29
@percusse and thanks for that, it's fixed now –  Danger Fourpence Dec 12 '12 at 13:31
Use graphicx package instead of graphics, as only the former supports the key-value syntax. For the graphics version, one needs to use
\scalebox{0.75}{\includegraphics{cinema}}