Are you talking about 2d art like icons, etc, or 3d models of stuff? The 2d art can easily be modded, since the XMLs just point to .pngs basically. The models for things should also be able to be modded, but I don't think anyone's tried to get them into the game. There was some talk that SD would need to release a special converter of sorts, but I haven't heard anything recent about importing custom models.

I see a few PNGS that look to be skins, very few DDS files though, We changed lots of the DDS files to make custom Chars and NPCs in NWN2.

I expected most of the textures to be  DDS but it seems they are not. 

I think the HKB files are the models, though in what format I am not sure.

It looks like many can be changed by redoing the PNG files, but not tried yet.

Time to try a few things and see what breaks where  

Lee

I think you can change the PNG texture files and that might work, but it will take some playing around, and I will not do much until the release as things may change from Beta 4.

But it does appear there is a way to Make or I should say change things to create a new NPC, the model side though I do not know.

As I said I am used to altering the DDS files to do this but the pngs seem to be non bump mapped textures so I think it will work.

So a Westros Mod may be doable, The Ice and Fire books of Martin.

Lee