1. Choose Preferences in the gear icon menu of the dock, Windows system tray, or OS X menu bar.
2. Choose Advanced.
3. Select from 16 different languages or use the System Default.
4. Click Save.

You'll see the new language the next time you start Yahoo! Widgets.

The change in Yahoo! Widgets might not change the language in a particular Widget. Only those Widgets built in multiple languages will change when you change the language preference in Yahoo! Widgets.