Detect japanese keyboard 106 keys

1. add japanese- IME in Keyboard and language
2. Windows seven mistakenly identify some Japanese keyboard as 101-key.

You will need to edit the registry to make it 106-key.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters

change this entries:

LayerDriver JPN REG_SZ kbd106.dll
OverrideKeyboardIdentifier REG_SZ PCAT_106KEY
OverrideKeyboardSubtype DWORD 2
OverrideKeyboardType DWORD 7

You can check the source if you are still having problems: Japanese Keyboard Not Functioning Correctly After Installing Windows 7