Turn off ARROW KEY Movement

Level 10
May 21, 2006
Hey guys,

I need a way to turn of the Arrow key Camera Movement off.
My whole campaign is in letterbox modes that means with turned off interface.
You can have conversations with NPCs like in normal RPGs where you have to choose between 3-5 answers (check my screenshots of my link).
I locked the cam with every 0.03 sec event. But sometimes it jumps to the side and that is really annoying.

I hoped that there is a way to change that via the gameplay constants for example.

Thanks for answers!