I also don't want to start a new thread about this, but if anyone would help, I'd greatly appreciate it. I'm trying to be able to run a version of TC3 and a version of a production city at the same time. In order to do that, I know you need to copy your game files, but I'd enjoy a step-by-step way to do this, because whatever I'm doing...is not working well enough, apparently.
Thanks.