I suspect you're playing one version of the game, but looking for saves from a completely different version. You're not launching the game from the executable file located in the game's folder, are you? Instead, you're using a shortcut on your desktop. If that's the case, do this: right-click on the shortcut, select "properties," and then "locate object." This will take you to the game's folder. Now, in this folder, look for a "games" folder and see if there are any save files there.