Knowledge window (Extreme UI)

[Nerf_Herder]

I'm trying to help Lanliin out by fixing his knowledge window - i'm VERY new to this, but i'm trying to change the background or something similar as it causes a rediculous amount of lag when it is open.

any tips? or anything in the xml file i should be looking for? which xml would have that info? etc.

Cheers in advance