Ok macophiles, I've got an OS X question for you. The laptop that I'm currently using is a Powerbook G4 w/ 1GHz processor and a piddly 256Mb of RAM. It's using OS X 10.3x9 which I believe is "Panther" or some such nonsense. Basically what I'm trying to do is upspec the laptop to the point where it can use the Duet. I've got a 1Gb RAM stick, but it was unstable when I first installed it. So my thought is to try upgrading the OS to Tiger (10.4.11, I think) and I'm wondering what I have to do to do this? Can I just download the upgrade from Apple? Can I purchase a used copy? Other thoughts or suggestions appreciated. I'm trying to limit my investment here since it's really just going to be used to test some Duet cables.