At first I've to say that I'm a LaTeX newbie at all (at the moment

My problem:
A friend of mine gave me this template:
Code: Select all
\documentclass[a4paper, 12pt, parskip]{scrartcl}
%Deutsche Einstellungen, Definition
\usepackage[ngerman]{babel}
\usepackage[latin1]{inputenc}
%Geometrien und Bilder
\usepackage[metapost]{mfpic}
\usepackage{wrapfig}
\usepackage{subfig}
\usepackage{graphicx}
\usepackage{listings}
\usepackage{epstopdf}
\usepackage{float}
%Anderes
\usepackage{makeidx} %index
\usepackage[square]{natbib} %Bibliothek
\usepackage[inner=3cm,outer=2.5cm,top=2.5cm,bottom=2.5cm,includeheadfoot]{geometry}
\usepackage{fancybox}
\usepackage{fancyhdr}
\usepackage{longtable}
\usepackage{hyperref}
\makeindex
%Kopfzeile, ect.
\pagestyle{fancy}
%==============================================================
\begin{document}
\parindent = 0pt
%Titelblatt
\include{titelblatt}
\tableofcontents
\chapter{}
\pagestyle{fancy}
%Seitennummerierung
\pagenumbering{arabic}
%=====================
%Alle Dateien \INCLUDE
%\include{Sample}
\include{allgemein}
\include{aufnehmer_widerstand}
\include{induktive_aufnehmer}
\include{kapazitive_aufnehmer}
\include{digitale_laengengeber}
\include{kontaktlose_wegmessung}
%=====================
\end{document}
Additionally I'm wondering why the references in the text are bounded with a red border.
Can anyone pleas help me?
thank you very much.
felix