My new 24" iMac arrived on Monday and I have barely left its side! It's absolutely the best purchase of my life thus far, so I applaud Apple for putting out such an amazing product and the MR community for helping me out in the buying process. Now that I have it, I do have some OS X related questions, since I have been a Windows user for the majority of my days on computers. a) Is there a way to "lock my workstation" on OS X? b) On my 24" iMac, perhaps after doing what I would like to in Question A, can I just turn the monitor off and leave everything else on? I would not have a problem with sleep, except my ethernet connection goes down and I need it active nearly all day. c) How do I setup Gmail through Mail.app correctly? I would like for mail to stay on the Google server, but I want the Google server to reflect exactly what is happening in Mail.app (meaning, deleted messages should be removed from GMail, read messages should be read, etc.) d) Can I do the same thing in Question C for iCal and Google Calendar (make them mirrors of each other but I control through iCal)? Much appreciated, crowd.