First of all; stop with this "doubt". In most Asian's language, the son and daughter of a brother or sister is one word so it's often I get confused when I write in English. Thirdly, can my NIECE use Mountain Lion while I test it? One work, two jobs done? Why do I need to lie? To get a faster answer? To cover my trivia motivation to do a simple search? This is one reason why I hate to join a forums with no proper mods. A steam of hatred. One day I join, the same day I leave. I see no more reason to stay here and I know people would flame me for this post. Thanks for everyone who actually helped me. I would go with google for more information as MOST suggested.