Sorry to have to ask this, I realize I am the epitome of Mac newbie. I just got a new Powerbook (love it, by the way) and it appears to have shipped with OS 10.2.3. I don't know a whole lot about OS X but I do know that further upgrades exist (10.2.7?) and I heard somewhere that updates within 10.2 are free. Is there any site I can go to or anything I have to do to take advantage of the newer version of 10.2? Thanks in advance for your help.