No problem. But remember this simple thing: To whoever wants to make a minimap picture:
-Take your picture. Resize it to 256x256 or 126x126 pixels. Do this with IrfanView, a simple program, downloaded in the Tools section. -You can cut some parts of the picture to egalize it. -Next, save it as War3MapPreview. It must be a .Tga (Truevision Targa) picture. Import it with the Import Manager, change its path to War3MapPreview.Tga (if you didn't do this before). -Save your map, reopen it, and that's it.