\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}{19.2cm}
\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@{}}
    Telefone & <%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 37%>
\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}rlrr@{}}
  \textbf{Number} & \textbf{Description} & \textbf{Qt'y} &
    \textbf{Unit} & \textbf{Price} & \textbf{Amount} \\
  & carried forward from <%lastpage%> & & & & <%sumcarriedforward%> \\
<%end pagebreak%>


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

\vspace*{0.5cm}

\parbox[t]{1cm}{\hfill}
\parbox[t]{10.5cm}{
\textbf{To}
\vspace{0.5cm}

<%name%>

<%address1%>

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

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

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

\vspace{0.3cm}

<%if contact%>
Attn: <%contact%>
\vspace{0.3cm}
<%end contact%>

<%if customerphone%>
Tel: <%customerphone%>
<%end customerphone%>

<%if customerfax%>
Fax: <%customerfax%>
<%end customerfax%>

<%email%>
}
\parbox[t]{7.5cm}{
\textbf{Ship To}
\vspace{0.3cm}

<%shiptoname%>

<%shiptoaddress1%>

<%if shiptoaddress2%>
<%shiptoaddress2%>
<%end shiptoaddress2%>

<%shiptocity%> <%shiptostate%> <%shiptozipcode%>

<%if shiptocountry%>
<%shiptocountry%>
<%end shiptocountry%>

\vspace{0.3cm}

<%if shiptocontact%>
Attn: <%shiptocontact%>
\vspace{0.3cm}
<%end shiptocontact%>

<%if shiptophone%>
Tel: <%shiptophone%>
<%end shiptophone%>

<%if shiptofax%>
Fax: <%shiptofax%>
<%end shiptofax%>

<%shiptoemail%>
}
\hfill

\vspace{1cm}

\textbf{ORDEM DE COMPRA} \parbox{0.3cm}{\hfill} \textbf{O R D E R}
\hfill
\begin{tabular}[t]{l@{\hspace{0.3cm}}l}
  \textbf{Data} & <%orddate%> \\
<%if reqdate%>
  \textbf{Requerido por} & <%reqdate%> \\
<%end reqdate%>
  \textbf{Número} & <%ordnumber%>
\end{tabular}

\vspace{1cm}

\begin{tabular*}{\textwidth}{@{}lp{\descrwidth}@{\extracolsep\fill}rlrr@{}}
  \textbf{Número} & \textbf{Descrição} & \textbf{Quant.} &
    \textbf{Unid.} & \textbf{Preço} & \textbf{Total} \\
<%foreach number%>
  <%number%> & <%description%> & <%qty%> &
    <%unit%> & <%sellprice%> & <%linetotal%> \\
<%end number%>
\end{tabular*}


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

\vspace{0.2cm}

\hfill
\begin{tabularx}{7cm}{Xr@{}}
  \textbf{Subtotal} & \textbf{<%subtotal%>} \\
<%foreach tax%>
  <%taxdescription%> em <%taxbase%> & <%tax%>\\
<%end tax%>
  \hline
  \textbf{Total} & \textbf{<%ordtotal%>}\\
\end{tabularx}

\vspace{0.3cm}

\hfill
  Preços em \textbf{<%currency%>}.

\vspace{12pt}

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

}

\end{document}