Customizing with own windows?

[Adoniis]

Can anyone tell me how to Edit ThorsUI with some other windows? Like the player window for instance. I love this UI, but the player window is WAY to small. I just can't see it. I would like to use the Arcane Caster Player Window for example.

I tried just overwriting thors files with the Arcane files, but EQ crashes when I do that. I use Thors Auto update, if that helps.