Windows – Japanese keyboard layout in Windows 7 doesn’t correspond to what’s written on the physical keyboard

Language includes things like is it right to left, or left to right, and the keyboard layout is just "when you press A, you get a" and things like that.

So far, brute force method: Autohotkey script. This is not optimal but it gets the job done:

^+!l::
Run, Control input.dll
Sleep, 1000
Send {Tab}{Tab}
Sleep, 100
Send {Enter}
Sleep, 1000
Send e
Sleep, 100
Send {Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}
Sleep, 100
Send {Right}{Down}{Right}US{Space}{Enter}
Sleep, 100
Send {Tab}{Tab}{Tab}
Sleep, 100
Send {Enter}
Sleep, 1000
Send {Tab}{PgDn}{PgDn}{PgDn}
Send {Tab}{Tab}{Enter}
Sleep, 100
Send A
Sleep, 100
Send {Enter}
return

Basically you press Ctrl+Shift+Alt+L when you start getting the bug and it fixes it - adds English (US) and removes it. May need tweaking around the wait values, and also maybe with the amount of Down's - I don't know if language list is the same on every computer (maybe it changes with time too).

However, a direct way of editing is preferred, so I'm still looking out for answers. I mean, Windows has to store those layouts it switches between somewhere, right?