The pc version has a high resolution mode switch /h
BTW, i could say the exact same thing for a 'start in high resolution' mode when starting a mission for other two games:
syndicate wars and magic carpet 2.
Those require pressing a key in mission (F8 in Syndicate Wars, F6 in Magic Carpet 2) to turn to the high resolution mode.
But really this is just a nitpick, there are probably much better hacks to do.
For instance that 'look for other cd in another drive' thing for World of Xeen would be grand because cd switching really sucks.