díky moc, editoval jsem ty registry, přkopírival jsem ty KBD* files a použil jsem tenhle skript a jede to

Open intl.inf and search for the language you want. On the line of the first occurence, you will find a code:
0000040c = %French_Standard% ,850 ,1,,040c:0000040c,0409:00000409


And run,
rundll32.exe setupapi,InstallHinfSection LANGUAGE_COLLECTION.BASIC.INSTALL language_code_found_above %WINDIR%\inf\intl.inf

In my example, language_code_found_above is 0000040c