Hello Wolly. Take a peek in the My Documents folder, specifically \My Documents\LDW\Fish Tycoon. The savegame files are named Fish Tycoon*.ldw, where * is a number corresponding to the player slot. There is also a backup savegame file for each game slot, which are named Fish Tycoon21.ldw through Fish Tycoon25.ldw, depending on how many player slots are in use.