Unfortunately I've gone out right after I posted my thread and installed XP.
And I'm going crazy right now, because I've got the same Messenger "We are unable to run audio and video setup" error.
More than three hours installing the OS and all the applications needed, and at the end Audio and Video won't work. especially that I haven't slept yet because of this installation, and it's almost 5am
I'm getting crazyyyyyyyyyyyyyyyyyyy
I'm afraid I get back and install win7 in new, and won't get the problems solved.
I'd like to work on 7 cause it's faster than xp, but I don't want to experience another disappointment.
Thanks man for your help.