Installation:
Start by backing up your files. Easiest way is to rename the Interface and WTF folder to Interface_backup and WTF_backup.
This way you keep your old UI incase you don't like reborn v6.2
Run the game again and login with the character you want to install the ui for. Upon exit you will see a new interface + wtf folder have been placed. You can copy your old config.wtf back which is in WTF_backup\ This file contains all your game settings (resolution ui scaling ETC).
Open Config.WTF and find:
SET uiScale
Change the value behind it to "0.74000000953674" so it looks like :SET uiScale "0.74000000953674"
Now copy the interface + wtf folder from the reborn package to your World of Warcraft folder.
before it will work you need to rename 3 things.
1: Go to World of Warcraft\WTF\Account\
Rename "ACCOUNTNAME" to your account name.
2: World of Warcraft\WTF\Account\ACCOUNTNAME
Rename "Realm Name" to your realm name.
3: World of Warcraft\Go to WTF\Account\ACCOUNTNAME\Realm Name
Rename "Charactername" to your character name.
Run the game and enjoy the UI
Updating the UI:
Updating the UI is easier then ever. Incase addons get outdated you can update all of them with 1 programm.
Because all mods are ACE you can use Winace updater instead of downloading them 1 by 1.
http://wowace.com/wiki/WinAceUpdater
download:
SourceForge.net: WowAceUpdater
How does it work ?
run WowAceUpdater.exe
wait for it to load all your addons hit f10 and voila.
Example picture:
http://www.xs4all.nl/~saitoh/WoW/UI/aceupdater.jpg