JabRef is a program for managing BibTeX database (.bib) files but does not directly affect what happens in LaTeX. Adding a database to a .tex file does not add in the citations. You need either \cite or \nocite: the latter adds references to the bibliography without a citation in the text
\begin{filecontents}{\jobname.bib}
@article{demo1,
author = {Other, A. N.},
journal = {J. Irrep. Res.},
title = {Some things we did},
year = {2012},
}
@article{demo2,
author = {Nobacon, D.},
journal = {J. Chumb.},
title = {Tubthumping},
year = {2012},
}
\end{filecontents}
\documentclass{article}
\usepackage[super]{natbib}
\bibliographystyle{unsrtnat}
\begin{document}
Some text \cite{demo1} more text\nocite{demo2}.
\bibliography{\jobname}
\end{document}
You will need to run LaTeX, then BibTeX, then LaTeX twice for the document to be complete.
bibfile first, what then must picked up by some LaTeX code. This is surely not related to TeXnicCenter. – Speravir Oct 28 '12 at 15:44