とりあえず怪しそうなレジストリ部分を自分用にメモ

[HKEY_CURRENT_USER\ControlPanel\Chinese IME UI]

[HKEY_CURRENT_USER\ControlPanel\Chinese IME UI\Settings]
"ShowState"=dword:00000000
"AutoCandAccel"=dword:00000001

[HKEY_CURRENT_USER\ControlPanel\Sip]
"SuggSpace"=dword:00000001
"DefaultIm"="{6F725480-642C-11d5-8205-0800460222F0}"
"MenuBarHeight"=dword:00000000
"AllowChange"=dword:00000001
"DragStyle"=dword:00000000

[HKEY_CURRENT_USER\ControlPanel\Keybd]
"RepeatRate"=dword:00000008　←キーリピートまでの時間だと思われ
"InitialDelay"=dword:00000177

[HKEY_LOCAL_MACHINE\Drivers\Active\15]
"Hnd"=dword:000348f0
"Name"="SIP0:"
"Key"="Drivers\\BuiltIn\\SIP"
"InterfaceType"=dword:ffffffff

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\SIP]
"Prefix"="SIP"
"Dll"="softkb.DLL"
"Order"=dword:00000001
"Index"=dword:00000000

[HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\KEYBD]
"DriverName"="keypad.dll"