Hey all, I apologize how elementary these questions may be - I did a search and I guess I didn't know what the right query was so I hope that someone will be kind enough to answer without grumbling about how stupid the questions are. I have a 12" Rev. E PowerBook with Superdrive. I'm upgrading it to 1.25 gigs of RAM this week, but that's probably not relevant. My Dad is giving me his 23" Apple Cinema Display (in mid-December when he gets a 30") from the generation before the current ones - it has that pinstripe thing going on - that generation. Anyway, I have the appropriate adapter and tested it for about a minute and it works with my computer but I didn't get time to do anything to answer these questions: 1. Can I have my PowerBook be closed and run off ONLY the larger screen. If yes, I'm assuming I need a keyboard/mouse connected. Is this correct? 2. This one is REALLY bad: I know the display is powered from the wall - it can't run off of the computer. However, if I have my PowerBook unplugged and I am using the second display, does the run the battery down faster? 3. Another horrible one: Does the second display use any RAM? I think it just makes the video card work harder... but I have NO experience with dual screens - sorry guys. Thanks in advance for putting up with these.