Compilation based primarily on Zork's Addons (http://www.wowinterface.com/downloads/author-101381.html) plus a few others ─ some modified. Credit and respect goes to the original authors.
Installation ✔
Open your World of Warcraft folder.
Remove your current "Interface". (Drag it to your desktop for example, so you don't delete it.)
Download Ansi UI and save the ZIP-file to your desktop.
Unpack Ansi UI and copy the "Interface" folder into your World of Warcraft folder.
Launch World of Warcraft.
Shift+Alt-click to move the stance bar & pet bar.