Depends, in the text files odd letters like 'ä' needs to be changed to to PC equivalent (something like ‰ I think) and odd chars in city names are perhaps best changed by a PC user if you ask nice
You also need to change the "quit" dialogue in the game.txt (just change it for the one that you normally replace in a pc game.txt).
There might be some other stuff as well that I don't recall right now.
You will need to remove a line in the labels.txt to allow PC users whit "Ultimate Civ II" (PC MGE users will be able to use our labels files right off) to use the scenario.