I have done everything (as i think) and on FIREFOX the quick time plug in does not work properly, if i get into
www.gametrailers.com or
www.gamespot.com the appears that fu.... QUESTION MARK with the symbol of QUICKTIME behind and i don't really know what shoud i do, i already checked in all folders and i have all the plug ins and everything to in "work properly" so if you know something about this issue i'll be glad with an answer, i hope that i don't have to reinstall my computer or other windows like answer.
Merci d'avance