Vista - Swiss German keyboard layout (unattended setup)

Hello,

I ran into problems with my unattended setup. When I start the setup, it
shows me the setup screen to enter the language and keyboard layout. So most
probably, there's something wrong in my answer file (uswing WAIK) Well, I put
away the whole project for a while but decided to give it a try again.

In my first attempt I tried those settings:
<component name="Microsoft-Windows-International-Core-WinPE"
processorArchitecture="x86" publicKeyToken="31bf3856ad364e35"
language="neutral" versionScope="nonSxS"
xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SetupUILanguage>
<UILanguage>de-ch</UILanguage>
</SetupUILanguage>
<InputLocale>de-ch</InputLocale>
<SystemLocale>de-ch</SystemLocale>
<UILanguage>de-ch</UILanguage>
<UserLocale>de-ch</UserLocale>
</component>

My second attempt looked like this:
<component name="Microsoft-Windows-International-Core-WinPE"
processorArchitecture="x86" publicKeyToken="31bf3856ad364e35"
language="neutral" versionScope="nonSxS"
xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SetupUILanguage>
<UILanguage>de-de</UILanguage>
</SetupUILanguage>
<InputLocale>2055:00000807</InputLocale>
<SystemLocale>2055</SystemLocale>
<UILanguage>2055</UILanguage>
<UserLocale>2055</UserLocale>
</component>

But this also didn't work. So can somebody tell me the correct local
settings for Swiss German? Any help would be apprecaited.

/Ray