I went to Best Buy today and played around with the top model MacBook. It is awesome, and I'm definitely buying next summer. But I have a question. I wanted to test the backlit keys, but when I wanted to increase the brightness, there was a little circle and slash below it. I couldn't get it to light up. The building was very bright. I went to system prefs, and went in the keyboard and mouse options. Only saw the box checked for "Illuminate when room is dark" and sleep mode, etc. Can I raise brightness of the keys even in a lit room? Thanks.