To use it press 'x'. To change what blocks you want to show press CTRL+x. Press 'c' to toggle creeper vision. Press 'v' to toggle cave finder. Never get lost or blown up again!
Download the mod (mirror) and extract its contents
Hold the windows button and press R
Type in %APPDATA% and press enter
Go to the .minecraft/bin folder
Use 7zip or some other archive manager to open minecraft.jar
Drag extracted files into archive
Delete META-INF folder
This Mod works for SMP also.
If you guys need any further help with the download or anything just ask!
I am the bone of my sword
Steel is my body, and fire is my blood
I have created over a thousand blades
Unknown to death, Nor known to life
Have withstood pain to create many weapons
Yet, those hands will never hold anything
So as I pray, Unlimited Blade Works