Change Lock Screen Language And Time Format?

How do I change the lock-screen language/time format?

Open the following in a text editor: C:Users<Username>AppDataRoamingMicrosoftWind owsLogonUserSetti ngs.ini

For example, the settings below changed the clock to 24 hour format and show month/day in Dutch.

Code:
[GlobalizationPreferences]
TimeFormat=HH:mm tt
LocaleName=en-US
GeographicRegion=US
Calendar=GregorianCalendar
Clock=24HourClock
Languages=nl-NL

It is not working for me. Does it only work in the Windows 8 previews?

The officially released Windows 8 doesn't have a "Logon" folder, but I created one and put "UserSettings.ini":

Code:
[GlobalizationPreferences]
TimeFormat=hh:mm:ss tt
LocaleName=en-US
GeographicRegion=US
Calendar=GregorianCalendar
Clock=12HourClock
Languages=en-US