Try following this step-by-step:
- You'll find the game folder in My Documents.
- Save both files to your desktop (don't try to open them).
- Then make sure to renumber both files so that they will appear sequentially last in the game folder (they need to be the same number, as the 2 files make up one save).
- Then copy and paste both files across into the folder.
- Exit the folder, start up your game as usual and load the new save - you will need to scroll down through the saves to find the new one.
