IMPORTANT:<br />

If you were using SkyUI 2.2 or older, you must remove it completely before installing the new version.<br />

Letting NMM handle the updating works fine, too.<br />

<br />

Manual Installation<br />

Locate the Data/ folder in your Skyrim installation directory. Typically it's found at Program Files/Steam/steamapps/common/skyrim/Data/.<br />

Extract the contents of the downloaded archive file to your Data/ folder.<br />

In the Skyrim Launcher, select Data Files and enable SkyUI.esp.