I'd recommend purchasing SWBFI on GOG.com. Then download GOG Galaxy and you can revert the game version and download the 1.2 version then install to the port like usual.
http://www.swbfgamers.com/index.php?topic=14810.msg126695#msg126695
http://www.swbfgamers.com/index.php?topic=14810.msg126695#msg126695