1. Extract "Healbot.rar" to "World of Warcraft/Interface/AddOns"

Let's say that your account is "marin" and you have character with nickname "Tanio" on this account.

2. Extract "RAR1.rar" to "World of Warcraft/WTF/Account/MARIN/SavedVariables"

3. Extract "RAR2.rar" to "World of Warcraft/WTF/Account/MARIN/Icecrown/Tanio/SavedVariables"

WARNING! This settings are specifically for Holy Paladin. If you want to use it for other class you have to go to Healbot options in-game -> Skins -> Icons and on bottom side you have Filter for class, All spells and Show Icon from where you can choice what specific buff to be enabled or disabled.

Example: You are resto shaman and you want Earth Shield to be enabled:

Filter (Shaman) -> All spells (Earth Shield) -> Show Icon (Always)

Have Fun! :)