
The installation instructions are the same as most other MineCraft mods, but for completeness, full instructions have been included.


WINDOWS
1) Open up %appdata%, if you don't know how to do this, start>run, then type in %appdata%
2) Browse to .minecraft/bin
3) Open up minecraft.jar with WinRAR or 7zip.
4) Drag and drop the necessary files into the jar.
5) IMPORTANT: Delete the META-INF folder in the jar.
6) Run Minecraft, enjoy!

MACINTOSH
1) Go to Applications>Utilities and open terminal.
2) Type in the following, line by line:
cd ~
mkdir mctmp
cd mctmp
jar xf ~/Library/Application\ Support/minecraft/bin/minecraft.jar
3) Outside of terminal, copy all the files and folders into the mctmp directory.
4) Back inside terminal, type in the following:
rm META-INF/MOJANG_C.*
jar uf ~/Library/Application\ Support/minecraft/bin/minecraft.jar ./
cd ..
rm -rf mctmp
5) Run Minecraft, enjoy!


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Instructions taken from
http://www.minecraftforum.net/topic/75440-v125-risugamis-mods-everything-updated/
