i saw some hacks on the terra site and it said you'd have to un-dat those files add the modifications but then what ?
If you found a file called gamearea.mes and you found it in a folder called mes then make a folder called mes in your playing directory, C:SierraArcanumdata. After making a folder, put the edited file, gamearea.mes, at the newly made folder, C:SierraArcanumdatames.