Drag & Drop the "reifnsk" folder into your "ReiMinimap__v..." zip
overwriting all the original files & folders within.

Then, from in-game...
  -  Hit the Minimap Options key [Default "M"] 
  -  Click "MINIMAP OPTIONS"
  -  Make sure MAP SHAPE=ROUND, TEXTURE=REI MINIMAP, and MAPMASKTYPE=DEPTH







YOU WILL NEED TO INSTALL REI'S MINIMAP MOD TO USE THESE TEXTURES!!
...obviously...

http://www.minecraftforum.net/topic/482147-reisminimap