To migrate Text Services and Input Languages using USMT 5.0 from Windows XP to Windows 7 this specified setting should be configured in config.xml file:
<component displayname="Microsoft-Windows-Win32k-Settings-DL" migrate="no" ID="http://www.microsoft.com/migration/1.0/migxmlext/cmi/microsoft-windows-win32k-settings-dl/microsoft-windows-win32k-settings-dl/settings"/>
Also I specified following settings:
<component displayname="Microsoft-Windows-International-TimeZones-DL" migrate="no" ID="http://www.microsoft.com/migration/1.0/migxmlext/cmi/microsoft-windows-international-timezones-dl/microsoft-windows-international-timezones-dl/settings"/>
<component displayname="Date, Time, Language and Region" migrate="no" ID="date_time_language_and_region">
<component displayname="Regional Language Options" migrate="no" ID="date_time_language_and_region\regional_language_options">
<component displayname="Microsoft-Windows-TextServicesFramework-Migration-DL" migrate="no" ID="http://www.microsoft.com/migration/1.0/migxmlext/cmi/microsoft-windows-textservicesframework-migration-dl/microsoft-windows-textservicesframework-migration-dl/settings"/>
<component displayname="Microsoft-Windows-MUI-Settings-DL" migrate="no" ID="http://www.microsoft.com/migration/1.0/migxmlext/cmi/microsoft-windows-mui-settings-dl/microsoft-windows-mui-settings-dl/settings"/>
<component displayname="Microsoft-Windows-International-Core-DL" migrate="no" ID="http://www.microsoft.com/migration/1.0/migxmlext/cmi/microsoft-windows-international-core-dl/microsoft-windows-international-core-dl/settings"/>
</component>
To get prepared config.xml create firs with /genconfig and /targetwindows7 switches.