\documentstyle[...times,notes]{vieweg}
The times option only changes the standard TEX fonts
(Computer Modern) to Times Roman. If your TEX installation does not
support this option you can omit this style. When using the times option, a PostScript printer is needed for printouts.
Furthermore, please notice the following advices.
\documentstyle but before \begin{document}
insert two lines to specify author and title of the contribution
\author{your name without address}
\title{title of the contribution}
\address{your address, lines separated with \\}
\maketitle.
article style,
i.e. the highest order heading is section. Do not use
chapters or unnumbered sections.
\newcommand mechanism
of LATEX, not only with \def. Otherwise different authors
could use the same command word.
.def, and
\included in the preamble.