Well, I’ve come upon my first function that my Mac software cannot run, and that means more will follow. I suppose it’s time to get an upgrade. I always worry that upgrades will overwhelm my system if they’re too new, but from what I can tell with my minimal support understanding, I probably have to start with Snow Leopard no matter what, so that shouldn’t be too big a step. It’s annoying to have to spend any money at all though. Grr.