I'm using my iMac in OS X for the first time in ages (my modem only works in Windows, and I don't like having two computers turned on often). I saw that there was an iWork 08 demo, so I downloaded it. It told me I needed to update OS X and Quicktime so I fired up Software Update. All it found was an iTunes update, which I installed anyway. I'm on 10.4.9, so I should need 10.4.10. I went to the support site and downloaded it, but it doesn't show any volumes that it can install to. My hard drive apparently "doesn't meet requirements". What's going on? Is there anything I have to do to sort it out?