Download the zip
file and extract it to the root directory of the drive that Yahoo
Messenger is installed on. This is usually C:. The new
skins directory will be extracted to: C:\Program Files\Yahoo!\Messenger\skins
Launch
Yahoo Messenger. These skins are designed for Yahoo
Messenger version 5.
From the Login
Menu, select Preferences > Appearance.
Select the new
skin from the 'Current Theme' drop-down box.