UI for Dummies... Fetish or Profit or in general.

[cutehappybunny]

I was wondering if someone could give me the "UI Instructions for Dummies"... I need an absolutely step by step explanation of how to put in a custom UI like profit reborn or fetish or both. I follow the instructions and nothing seems to work and I'll admit half of the instructions and thread discussions might as well be in Greek to me because I'm not computer savvy in any way.

~please help~