If your not using Slick then it a bit simpler since you can just have TWL handle all the input. Just use LWJGL directly. Something like this would be a good start: http://wiki.l33tlabs.org/bin/view/TWL/G ... d+with+TWL
I'm not sure how the rendering NASA World Wind works, but either do it yourself and have TWL rendered on top of it - or if you can render it to an image or what not- then use it within TWL.
If you look at the main demo, he just has an image in a scroll box: http://twl.l33tlabs.org/#demo
or you could also just it as the desktop background or render it yourself directly in OpenGL.