For install my mod ( Freezer mod 1.2.4 ) you must :

1) Install Risugami's Modloader
2) Install Risugami's Audio Mod
3) Install Pudelhund's Dimension API
4) Put the content of "Put on minecraft.jar" on your minecraft.jar ( C:\Users\You\AppData\Roaming\.minecraft\bin )
   Put the content of "Put on .minecraft folder" on .minecraft folder ( C:\Users\You\AppData\Roaming\.minecraft )
5) Play and Enjoy !!


If there is any bug, report him on post a comment on the mod page : http://www.minecraftforum.net/topic/1128585-wip-ssp-the-freezer-would-you-like-to-see-the-inverse-of-the-nether-a-new-dimension-new-fire-new-water-and-mores/   