\documentclass[french,12pt]{article}
\usepackage[T1]{fontenc}
\usepackage{a4}
\usepackage{times}
\usepackage{eurosym}
\usepackage{fancybox}
\usepackage{babel}
\usepackage{doublespace}
\usepackage{vmargin}
%\usepackage{pstricks}
<TMPL_VAR ENTETE>


\setmarginsrb{1cm}{1cm}{1cm}{2cm}{0in}{0in}{0in}{0in}

\begin{document}
\singlespace

~
\vspace*{2.8cm}
~

\begin{flushright}
  \begin{bf}
  \begin{tabular}{p{8cm}}
    <TMPL_VAR ADRESSE> 
  \end{tabular}
  \end{bf}
\end{flushright}

\vspace*{2cm}

\begin{flushleft}
\thicklines
\linethickness{1cm}
\Ovalbox{
  \\

  \begin{tabular}{p{18cm}}
    \\
    \begin{large}
      {\bf ~~~~~~~FACTURE~~<TMPL_VAR NO>~~~~}
    \end{large}\\
  \\
  \end{tabular}

  \\
}
\end{flushleft}
\vspace*{0.5cm}

\vspace*{0.5cm}

\begin{flushright}
  \begin{tabular}{p{6cm}r}
    {\bf Date d'émission :}& <TMPL_VAR DATEEMI>\\
    {\bf Échéance :}& <TMPL_VAR DATEECH>\\
  \end{tabular}
\end{flushright}
\\\\
\Ovalbox{
  \begin{minipage}[t][10cm][t]{18.5cm}
    ~~~~{\bf Description}\\
    <TMPL_VAR DESCR>
    \vfill
  \end{minipage}\\
  }

  \vfill

\begin{flushright}
  \begin {tabular}{p{12cm}r}
    \hline
    {\bf Montant Net~ \euro~ HT}& <TMPL_VAR HTE>\\
    {\bf TVA (<tmpl_var TVA>)} & <TMPL_VAR MTTVA>\\ 
    \hline
    {\bf TOTAL~ \euro~ TTC} & {\bf <TMPL_VAR TTCE>}\\ 
    \hline
  \end{tabular}
\end{flushright}


~
\vfill
~

\end{document}