Thanks to you all for your answers.

I have just finished from reinsatalling Context as i kept a backup of my Texlive tree before my first installation.

This time i avoided to do things manually and i have unzipped my files directly to the texmf folder as it is supposed to be done.

Everything works fine now. But i can't get \placecontent to generate my TOC (This is the problem that lead me to update Context at first hand).

A question to Hans:

What is the folder script in cont-tmf ? I had to copy manually the texexec.pl from this folder to my bin folder to update texexec with the 5.0 version. Should not that have been done when i unzipped every thing or is it done on purpose (To me it looks like the peltk folder in texmf\context).

Again thanks.

Dirar.