Uwe, part of your spell no work for me. I must deleted "\protect\numberline{}" With this the entire ERT appears in my output. I use \addcontentsline {toc}{chapter}{Preface}. It´s work ok. But Preface appears in columm of chapter numbers, (extreme left). textclass scrbook no available in my lyx. I have: #LyX 1.3 created this file. For more info see http://www.lyx.org/ \lyxformat 221 \textclass book
\begin_preamble \usepackage[latin1]{inputenc} \usepackage{babel} \date{} \end_preamble \language spanish \inputencoding latin1 \fontscheme default \graphics default \paperfontsize 11 \spacing single \papersize b5paper \paperpackage a4 \use_geometry 0 \use_amsmath 0 \use_natbib 0 \use_numerical_citations 0 \paperorientation portrait \leftmargin 2.3cm \topmargin 2cm \rightmargin 2cm \bottommargin 1.8cm \secnumdepth 3 \tocdepth 3 \paragraph_separation indent \defskip medskip \quotes_language french \quotes_times 2 \papercolumns 1 \papersides 2 \paperpagestyle plain \bullet 0 0 7 -1 \end_bullet \layout Title La tecnología en la Antigüedad \newline Un estudio comparado \layout Author Marcelo Victorio Acuña \layout Chapter* \shape italic Prólogo \begin_inset ERT status Open \layout Standard \backslash addcontentsline{toc}{chapter}{ \backslash protect \backslash numberline{}Prólogo} \end_inset \layout Standard \noindent my text ... __________________________________________________ Correo Yahoo! Espacio para todos tus mensajes, antivirus y antispam ¡gratis! ¡Abrí tu cuenta ya! - http://correo.yahoo.com.ar