\documentclass[a4paper,twoside]{article}
\usepackage{rotating}
\usepackage{times}
\usepackage[dvips]{graphics}
\rotdriver{dvips}
\begin{document}
a b c
\def\X{\parbox{2in}{this is some text in a 2in wide parbox
this is some text in a 2in wide parbox
this is some text in a 2in wide parbox}}

\begin{turn}{-90}
-90: \X
\end{turn}

\begin{turn}{90}
90: \X
\end{turn}

\begin{sidewaysfigure}
  \centerline{\psfig{figure=cat.eps,width=.8\textheight,height=.4\textwidth}}
\caption{A pathetically squashed rotated pussycat (1)}
\global\def\rotfloatpage{L}
\end{sidewaysfigure}

\begin{sidewaysfigure}
  \centerline{\psfig{figure=cat.eps,width=.8\textheight,height=.4\textwidth}}
\caption{A pathetically squashed rotated pussycat (2)}
\global\def\rotfloatpage{R}
\end{sidewaysfigure}

\begin{sidewaysfigure}
  \centerline{\psfig{figure=cat.eps,width=.8\textheight,height=.4\textwidth}}
\caption{A pathetically squashed rotated pussycat (3)}
\global\def\rotfloatpage{L}
\end{sidewaysfigure}

\begin{sidewaysfigure}
  \centerline{\psfig{figure=cat.eps,width=.8\textheight,height=.4\textwidth}}
\caption{A pathetically squashed rotated pussycat (4)}
\global\def\rotfloatpage{R}
\end{sidewaysfigure}
bye bye
\clearpage
\end{document}
