adding acknowledgement in .tex file [duplicate]

Question

Possible Duplicate:
Creating unnumbered chapters/sections (plus adding them to the ToC and/or header)

I want to thank my professor with mention in my LaTeX document, so I need to add a section (without section number) "acknowledgement" before the introduction in my .tex file . How can I write there?

Answer 1

To add a non numbered section you just use

\section*{Acknowledgement}

If you want to insert this section on the table of contents, use

\addcontentsline{toc}{section}{Acknowledgement}

after the first command.