wc3edit.net

You need to use a hex editor, such as XVI32, to edit the .w3x (the map). Find the name, change it, and save it. Make sure that you remove a blank character for every one that you add in, to insure that the header remains 512 bytes. Rename the .w3x (the map), so that the file name also matches the new name. You need to extract the war3map.w3i, open it with a hex editor, change the map name (if it calls a string, then find that string in the war3map.wts and change it there, too, and then proceed to the following), save, delete the one in the map, add the new one back in, and flush the map. And, you need to open up the war3map.j, search for call SetMapName, change the map name that's in quotes right after that (if it calls a string (it says TRIGSTR_XXX), then open the war3map.wts, find the string it calls (whatever number the XXX was, search for that, the string is the stuff right underneath it), and change it there, too, and then proceed to the following), save, delete the one in the map, add the edited one back in, and flush the map.

You need to extract the war3map.w3i, open it with a hex editor, change the map name (if it calls a string, then find that string in the war3map.wts and change it there, too, and then proceed to the following), save, delete the one in the map, add the new one back in, and flush the map. And, you need to open up the war3map.j, search for call SetMapName, change the map name that's in quotes right after that (if it calls a string (it says TRIGSTR_XXX), then open the war3map.wts, find the string it calls (whatever number the XXX was, search for that, the string is the stuff right underneath it), and change it there, too, and then proceed to the following), save, delete the one in the map, add the edited one back in, and flush the map.