Okay, so I'm trying to install Fallout 3, but the current installer appears to be broken when installing through Steam (I don't have a disk copy to try).
However, I installed Skyrim via Steam using a PlayOnMac installer and Fallout 3 works well under this. However, there are some lingering issues I'd like to resolve, but which require making some modifications to the Wine configuration, and may also require some extra DLLs to be installed or swapped.
I don't want to risk ruining my Skyrim virtual drive, however I'd like to use it as a starting point, but I can't figure out how to simply duplicate it. Is this possible? If so, how would I go about doing it?