Final Fantasy Hacktics

Hi there, after lurking a bit I decided to take the plunge and join.  I'm currently looking at the basic story editing and game intro.  One thing elludes me though, I know that you're able to change the sony entertainment of america via the sceap.dat but is there a way to edit the squaresoft logo as well?

It's been a while since I looked at the tool, but there's some older tool that allows you to view the graphics of the game, but modifying it is a bit trickier than using the modern tools obviously.