Just wanted to address this issue, the above thread in which a problem was posted by linus has been locked. If you are installing HoMaM III from a Sold Out Software edition of the game, install from Heroes 3 -> _SETUP -> SETUP.EXE rather than directly from the disk or from the setup.exe file outside a folder. I think this is the way to do things for any Sold Out Software game release, so maybe it should be included in tips & tricks or something :)