To use map files other than the one that comes with Giza the file must be named "Map" and be in the same folder as the game. You should rename the original map file "Map original" or something similar in case you want to play it again. When the game starts up it looks for a file called "Map" in it's folder. If it can't find one you will get an error message.
You can only play other maps if you have registered Giza. See the Ordering page for more information on how to register.
