[Windows Phone 7 Software Development] ONDR4SH3K:
Registry own changes to access from EN to CZ language:

PhoneConverters/Tokens

NEW KEY - Czech

CLSID (String) - {9185F743-1143-4C28-86B5-BFF14F20E5C8} [???]

Default (String) - English Phone Converter [???]

PhoneMap (String) - - 0001 ! 0002 & 0003 , 0004 . 0005 ? 0006 _ 0007 1 0008 2 0009 aa 000a ae 000b ah 000c ao 000d aw 000e ax 000f [???]

PhoneConverters/Tokens/Czech/Attributes

Default (String)

Language (String) - 405 [1029 HEX]

Recognizers/Tokens

NEW KEY - MS-1029-100-WINMO

409 (String) - Microsoft Speech Recognition Engine - en-US Embedded v10.0 [???]

AlternatesCLSID (String) - {0C03E67F-A0E6-4D78-BB70-A6C0B240387B} [???]

Autodetection (DWORD) - 0 [???]

Background Adaptation (DWORD) - 0 [???]

CLSID (String) - {FEBD04CD-06E2-46BC-8C13-B8C32E591ED9} [???]

Default (String) - Microsoft Speech Recognition Engine - en-US Embedded v10.0 [???]

Persist Language Model Adaptation (DWORD) - 0 [???]

PrefferedAudioRate (DWORD) - 16000 [16000 kHz]

RecoExtension (String) - {69EAE6BE-F3A7-4EE0-B132-916BB1A019AB} [???]

Server Mode (DWORD) - 0 [???]

Recognizers/Tokens/MS-1029-100-WINMO/Attributes

Alternates (String) - CC [???]

AudioFormats (String) - 6;18;22 [???]

CommandAndControl (String) [???]

Desktop (String) [???]

DictationInCFG (String) - Anywhere;Trailing [???]

Hypotheses (String) [???]

Language (String) - 405 [1029 HEX]

Name (String) - MS-1029-100-WINMO [Name KEY]

SpeakingStyle (String) - Discrete;Continuous [???]

UPSPhoneSet (String) [???]

Vendor (String) - Microsoft

VendorPreferred (String) [???]

WildcardInCFG (String) - Anywhere;Trailing [???]

WordSequences (String) [???]

Recognizers/Tokens/MS-1029-100-WINMO/LocaleHandler

CLSID (String) - {288DFCEF-7DAF-4EEF-9BB4-952DD7B4D13A} [???]

Default (String) - SR Default Locale Handler [???]

Recognizers/Tokens/MS-1029-100-WINMO/Lookup

Datafile (String) - \WINDOWS\lsr1033.lxa [???]

Default (String) - SR English Lookup Lexicon [???]

Recognizers/Tokens/MS-1029-100-WINMO/Lts

Datafile (String) - \WINDOWS\r1033sr.lxa [???]

Default (String) - SR English Lts Lexicon [???]

Recognizers/Tokens/MS-1029-100-WINMO

NEW KEY - Models

Recognizers/Tokens/MS-1029-100-WINMO/Models

NEW KEY - 1029

Default (String) - L1029 [???]

Recognizers/Tokens/MS-1029-100-WINMO/Models/1029

NEW KEY - L1029

Default (String) - \WINDOWS\L1033 [???]

Recognizers/Tokens/MS-1029-100-WINMO/TextNorm

Datapack (String) - \WINDOWS\MSTTSLocEnUS.dat [???]

Default (String) - SR Engine (9.0) Text Normalization [???]

SpeechUX/Experience/TextContact/Attributes

NEW DWORD - 1029

1029 (DWORD) - 1 [Access Speech button to TextContact]

SpeechUX/Experience/VoiceDialer/Threshold

NEW STRING 1029

1029 (String) - 0 3e-1 1 4e-1 2 5e-1 3 6e-1 4 5e-1 5 4e-1 6 7e-1 [???]

SpeechUX/Experience/VoiceSearch/Atrributes

NEW DWORD 1029

1029 (DWORD) - 1 [Access Speech button to VoiceSearch]

SpeechUXPlugins/Tokens/SharedUI/Attributes

NEW STRING 1029

1029 (String) - 1 [Access Speech in Setting menu]

SpeechUXPlugins/Tokens/VoiceShell/Threshold

NEW STRING 1029

1029 (String) - 0 5e-1 1 4e-1 [???]

UXLanguages/Tokens

NEW KEY cs-CZ

UXLanguages/Tokens/cs-CZ

Culture (String) - cs-CZ [Codename language]

Default (String) - Czech (Czech) [Name language]

Language (DWORD) - 1029 [Code language]

Recognizer (String) - HKEY_LOCAL_MACHINE\Software\Microsoft\Speech\Recognizers\Tokens\MS-1029-100-WINMO [Path to MS-1029-100-WINMO]

Voice (String) - HKEY_LOCAL_MACHINE\Software\Microsoft\Speech\Voices\Tokens\MSTTS_V30_CsCZ_ZiraM [Path to MSTTS_V30_CsCZ_ZiraM]

UXLanguages/Tokens/cs-CZ

NEW KEY Attributes

UXLanguages/Tokens/cs-CZ/Attributes

Default (String) - 405 [1029 HEX]

Voices/Tokens

NEW KEY MSTTS_V30_CsCZ_ZiraM

Voices/Tokens/MSTTS_V30_CsCZ_ZiraM

405 (String) - Microsoft Zira Mobile - English (United States) [???]

CLSID (String) - {C64501F6-E6E6-451f-A150-25D0839BC510} [???]

Default (String) - Microsoft Zira Mobile - English (United States) [???]

LangDataPath (String) - \WINDOWS\MSTTSLocEnUS.dat [???]

VoicePath (String) - \WINDOWS\M1033DSK [???]

Voices/Tokens/MSTTS_V30_CsCZ_ZiraM

NEW KEY Attributes

Voices/Tokens/MSTTS_V30_CsCZ_ZiraM/Attributes

Age (String) - Adult

Gender (String) - Female

Language (String) - 405 [???]

Name (String) - Microsoft Zira Mobile

SharedPronunciation (String) - 0 [???]

Vendor (String) - Microsoft

Version (String) - 3.0

Hope it helps.