years later but wondering the same!
@mate54 My holiday edition has the base game as well, so the four discs don't specify that one is specifically the holiday edition of the game.
@saritsmageets , if you have the original disks and a disk drive, the game can be installed. If you need further instructions or help on how to install the game, please start a new post so that we can track it easier.
@Tremayne4260 I have a disc drive, and like OP I have double deluxe and holiday edition which both come with the base game. There is no separate disc specifically for holiday edition, it is two separate base games with extras
