Hi Romsinha,
Rather than have everybody who is having trouble send you an email, wouldn't it be better to update the documentation at http://helpx.adobe.com/photoshop-elements/kb/photoshop-element-12-sile nt-install.html so that it actually has the correct information?
Also, can I suggest you update your comment at http://forums.adobe.com/message/6260649#5781206 to remove the typographic quotes and replace them with straight quotes? I think that would help resolve the issues some people are facing.