HHK が日本語キーボードあつかいになる
http://support.microsoft.com/kb/927824/ja (XP でもおなじ)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters LayerDriver JPN REG_SZ kbd101.dll OverrideKeyboardIdentifier REG_SZ PCAT_101KEY OverrideKeyboardSubtype DWORD 0 OverrideKeyboardType DWORD 7