> I couldn't find this feature in the options, maybe it
> doesn't even exist. So I wonder if HTTrack is able to
> download contents, images when HTML tags are commented :
> <!-- <img src="url"> -->

This isn't possible. It was possible in old releases (due 
to a bug!), but it would cause too much problems to 
reactivate this "feature" (which is generally totally 
useless, except when files were hidden)

> ps : Xavier, pourquoi ne pas ouvrir un forum français ?
Il n'y aurait pas assez de personnes intéressées autant que 
je sache. Le forum "anglais" rassemble en fait énormément 
de nationalités (pas uniquement anglophones)
/ There wouldn't be enough people interested AFAIK - and 
the "english" forum is potentially read by people from many 
nationalities.