noob and dont mean to sound dumb but then... Ive never done an add in rom with these many files and I m not sure how. I want this rom. I did

Derek's ROM v20 and its in exe. but Ive never done one like this so how do I do it? I have 2.31 unlocker by ImcokeMan and I undersatand that part but what after that, what do I do. Which file do I do next ? Rom utility? bootloader what? Im trying to figure it out without brickiing.
Thanks