[Mobhack]

Open explorer at the save game folder. Select an existing CMT file, right click and select copy. Then right click on explorer pane and select paste. You'll get a "SpsvNNN - copy.cmt " - click on it and edit the file name deleting the " - copy" and change NNN to the slot you want to use, like 003 if you are wanting it in slot 3.

It's basic Windows 101...

If windows is too much for you, then open the game and start a random battle, doesn't matter which. Save that to the slot you want to use (and if you want a special file name, use that) when you get the opportunity to save. Exit the battle generator and game and copy your dat file over the dat file of that scratch save you made to the slot you wanted.

But the original sender should have zipped up both files, in the first place.