\documentclass[twoside]{scrartcl}
\usepackage[frame]{xy}
\usepackage{tabularx}
\usepackage[latin1]{inputenc}
\setlength{\voffset}{0.5cm}
\setlength{\hoffset}{-2.0cm}
\setlength{\topmargin}{0cm}
\setlength{\headheight}{0.5cm}
\setlength{\headsep}{1cm}
\setlength{\topskip}{0pt}
\setlength{\oddsidemargin}{1.0cm}
\setlength{\evensidemargin}{1.0cm}
\setlength{\textwidth}{18cm}
\setlength{\textheight}{24.5cm}
\setlength{\footskip}{1cm}
\setlength{\parindent}{0pt}
\renewcommand{\baselinestretch}{1}
\begin{document}

\newlength{\descrwidth}\setlength{\descrwidth}{10cm}

\newsavebox{\hdr}
\sbox{\hdr}{
  \fontfamily{cmss}\fontsize{10pt}{12pt}\selectfont

  \parbox{\textwidth}{
    \parbox[b]{12cm}{
      <%company%>
      
      <%address%>}\hfill
    \begin{tabular}[b]{rr@{}}
    Telefono & <%tel%>\\
    Fax & <%fax%>
    \end{tabular}

    \rule[1.5ex]{\textwidth}{0.5pt}
  }
}
    
\fontfamily{cmss}\fontshape{n}\selectfont

\markboth{<%company%>\hfill <%ordnumber%>}{\usebox{\hdr}}

\pagestyle{myheadings}
%\thispagestyle{empty}     use this with letterhead paper

<%pagebreak 90 27 48%>
\end{tabular*}

  \rule{\textwidth}{2pt}
  
  \hfill
  \begin{tabularx}{7cm}{Xr@{}}
  \textbf{Subtotal} & \textbf{<%sumcarriedforward%>} \\
  \end{tabularx}

\newpage

\markright{<%company%>\hfill <%ordnumber%>}

\vspace*{-12pt}

\begin{tabular*}{\textwidth}{@{}lp{\descrwidth}@{\extracolsep\fill}rlrrr@{}}
  \textbf{Codice} & \textbf{Descrzione} & \textbf{Quantit\`a} &
    \textbf{Unit\`a} & \textbf{Prezzo} & \textbf{Sconto} & \textbf{Totale riga} \\
  & carried forward from <%lastpage%> & & & & & <%sumcarriedforward%> \\
<%end pagebreak%>


\fontfamily{cmss}\fontsize{10pt}{12pt}\selectfont

\vspace*{2cm}

<%name%>

<%address1%>

<%if address2%>
<%address2%>
<%end address2%>

<%city%> <%state%> <%zipcode%>

<%if country%>
<%country%>
<%end country%>

\vspace{3.5cm}

\textbf{ORDINE DI VENDITA}
\hfill
\begin{tabular}[t]{l@{\hspace{0.3cm}}l}
  \textbf{Data ordine} & <%orddate%> \\
<%if reqdate%>
  \textbf{Consegna} & <%reqdate%> \\
<%end reqdate%>
  \textbf{Ordine numero} & <%ordnumber%>
\end{tabular}

\vspace{1cm}

\begin{tabular*}{\textwidth}{@{}lp{\descrwidth}@{\extracolsep\fill}rlrrr@{}}
  \textbf{Codice} & \textbf{Descrizione} & \textbf{Qt\`a} &
    \textbf{Un.} & \textbf{Prezzo} & \textbf{Sconto} & \textbf{Tot. riga} \\
<%foreach number%>
  <%number%> & <%description%> & <%qty%> &
    <%unit%> & <%sellprice%> & <%discount%> & <%linetotal%> \\
<%end number%>
\end{tabular*}


\parbox{\textwidth}{
\rule{\textwidth}{2pt}

\vspace{0.2cm}

\hfill
\begin{tabularx}{7cm}{Xr@{}}
  \textbf{Totale righe} & \textbf{<%subtotal%>} \\
<%foreach tax%>
  <%taxdescription%>: <%taxrate%>\% su <%taxbase%> & <%tax%>\\
<%end tax%>
  \hline
  \textbf{Totale ordine} & \textbf{<%ordtotal%>}\\
\end{tabularx}

\vspace{0.3cm}

\hfill
  Tutti i prezzi sono in valuta \textbf{<%currency%>}.

\vspace{12pt}

<%if notes%>
  <%notes%>
<%end if%>

}

%
%\renewcommand{\thefootnote}{\fnsymbol{footnote}}
%
%\footnotetext[1]{\tiny
%A 10\% order cancellation fee will be applied for any special order products or
%products that have been customized, enhanced or upgraded at customers request.
%Items which are non-returnable are indicated above.
%}

\end{document}