Bueno, un amigo me dijo que suba el Rei"s Minimap para Minecraft porque el se pierde mucho, así que bueno.
Descargar Rei’s Minimap Mod1.5.2
Buscar en el buscador %appdata% y abrir la carpeta Roaming, abrir la carpeta .minecraft, luego la bin y finalmente minecraft.jar con WinRar.
Borrar la carpeta META-INF.
Pegar los archivos del interior del mod descargado, dentro de minecraft.jar y si aparece de nuevo la carpeta META-INF, borrarla nuevamente.
¡No volverás a perderte!
Link:    http://adf.ly/937215/reimm-152

Well, a friend said to me that he needs Rei"s Minimap for Minecraft because it gets lost very much, so good. To download Rei's Minimap Mod1.5.2 search in the search box %appdata% and open the folder Roaming, then open the folder .minecraft, then bin and finally minecraft.jar with WinRar. Then erase the folder META-INF. Finally paste the files of the interior of the downloaded mod, inside minecraft.jar and if there appears again the folder META-INF, erase it again. You will not return to get lost!
Link:    http://adf.ly/937215/reimm-152