Custom In-Game Minimap

Custom In-Game Minimap

Just a quick question.

I know how to have a custom minimap in the game creation screen but i was wondering how you have a custom minimap in the actual game.

I have seen it done before, people have a picture down in the bottom right hand corner instead of the map.

Any help will be much appreciated
~Thanks

You should have found that out if you searched for it, but anyways:
-import a BLP with size 256x256
-change its Path to war3mapMap.blp