sorry, but if you are using full texture filtering, you will get those
distorted texts... use a filtering without sprites, and texts will be fine
(yeah, yeah, backgrounds will look pixelated, but hey... we all have
to make compromises
)
You can also try to use no filtering at all (that's what I am doing in most
games), and activate fsaa in your display properties instead
(if it's available and if you don't care about slower battle whirls in ff9
)