I am one of the Mod Install Challenged that Zen mentioned in his first post.
Your instructions are good, Zen. I'm sure I could install it now if I want to (and I do). But I was wondering: does this mean that all I need to do to switch between modded and unmodded Dominions is go back into Preferences and undo the steps you've listed? So there's no need for, say, an unmodded copy of the game so I could play with those who prefer to play with the unmodded game?