[raidzero]

look in your registry under hkey local machine\software\microsoft\chome and look for the facebook section and look for the path to the facebook executable... or I can check in your cab... I will do that

OK hers the problem. your cab looks in \windows for facebook.exe but you say yours is in \program files\facebook?
i edited your cab and reuploaded it based on \program files\facebook\facebook.exe