I just downloaded the shader listed as "Normalmapping Shader" on the wiki shader list, and it works perfectly with lights, but not the sun. With only a sun, it appears with no shading whatsoever, it actually looks worse than the other models in the level. I know nothing about actual shader programming, so what can be done to fix this?

Yes this shader is only suited for lights, propably thought as an indoor scene shader.
It could be rewritten easily, however why don't you just use another normalmappingshader, eg. one of this ones:
http://files.filefront.com/Massive+3DGS+Shadercollection/;8119277;/fileinfo.html

Can someone point me to a shader that uses the sun light? I tried the specular normalmapping shader in the projects folder, but it seems to have no light attenuation, and also is very washed out.

Well isn't that exactly what I have done??

i can do anyshader object shader you want, now that i have mental mil eheh

Probably, but they are not really optimised and very dirty layouted... I would not really recomment using it if you aren´t able to clean it up.

hum, well thats true, but, i can clea it up, i usauly do it whe i convert it for GS, and remove layouts and stuff, They run fast on my laptop anyway.
i do't see other way of building shaders, since the visual part would be hard.

Wtf? I just write them down and am very happy with it. I haven´t done it yet, but you can even write them in "realtime" getting the visual feedback directly from within A7. It is much more flexible then any shadereditor and a lot cleaner. In many cases it is even faster then converting other shaders.

ok but i mean,m you know all the formulas to achive falloff, gradient, noise, etc etc, that reflectio refraction, so easly, than a visual editor, like for example mental mil.

But of course it will be clenear and possible to write them down..