Ok, first, what i have detected is that the latexcad.sty file has to be "C:\Archivos de programa\MiKTeX 2.7\tex\latex" if not the error "latexcad.sty not found appears". Once copied there and the latexcad.zip descompresed in "C:\Archivos de programa\MiKTeX 2.7\tex\latex\latexcad" and also in "C:\Archivos de programa\MiKTeX 2.7\tex\latex", the .sty file is detected but is when appears the "missing \begin{document} errors".
The kpsewhich command generate this: http://www.nabble.com/file/p17447166/Image.jpg Other thing is that my latexcad only have 7 .sty files: eepic.sty epic.sty epsf.sty fancybox.sty latexcad.sty lgrind.sty rotate.sty /Angel -- View this message in context: http://www.nabble.com/Latexcad-help-Again-tp17411764p17447166.html Sent from the LyX - Users mailing list archive at Nabble.com.