Ummmmm....Yes I realise that you can't use PC upgrades on a Mac, but I was assuming that the upgrade i found at civfanatics/Civ II/Downloads/Patches,Upgrades/Civ2 Gold for Mac v1.11 (1.3 MB) * IS a Mac program. This is the one I was trying. it downloads, unstuffs and self-extracts like a Mac program and opens up when I click on it into an Installer Vise Mindvision program, lets me select a folder into which to make the conversion, runs as if it's updating, but then has an error: Civilization II Gold file not found or something similar. So I think it pretty well has to be a Mac program (hence the name Civ II Gold for Mac). So, i still wonder if anyone can give me suggestions to get it to work.
If not I will take your suggestions to hunt for a copy online.
Thanks