Requirement:

You have to install Risugami's Modloader first to use this mod

Installation:

Simply put the zip file in your .minecraft/mods folder.

Guide:

To create the new blocks, you will first need a saw:



When right-clicking on a planks, cobblestone, glass, sandstone, dirt, stone, sand, blocksnow, grass, brick, gravel, gold, steel, obsidian or diamond block, you will circle the 4 different types of stairs as shown on the next picture: