How are PostScript images (including Mathematica graphics) incorporated into a LaTeX document? The best way is to use the epsfig package.
Why can't I use figures with slide class?
There are five base classes
in LaTeX. Not all the environments which are
defined for article and report class are
defined for slide class; in particular,
figure and table environments
are not defined
in the slides and letter classes.
How can I make a table sideways?
Use the existing LaTeX package rotating,
by typing \usepackage{rotating}
near the top of the LaTeX file.
It defines the environment sidewaystable
which can be used just like the
environment, i.e.,
\begin{sidewaystable} ...
\end{sidewaystable}.
(Similarly,
\begin{sidewaysfigure} ...
\end{sidewaysfigure}
is defined.)
In the sidewaystable environment one can either build a table using LaTeX commands in the tabular environment, or import a PostScript image of a table created with some other software, using the epsfig package.