How to change ingame(trade node) resource icon?

[Gallus Domesticus]

So I just finished this mod:http://www.twcenter.net/forums/showthread.php?t=462376
It changes the (trade node)resource "incense" to "imported matchlocks". But I can't figure out how to change the icons.

I tried the icons in ui\campaign ui\pips but it didn't seem to work. So anyone know how to change this thing?

[BullGod]

try UI/Campaign UI/Skins
and files like:
resource_*.tga
resource_*_50x50.tga

[Gallus Domesticus]

Thanks for the reply, that was part of it.
The floating icons that are above resource buildings are(as I learned from SaengsaWang) actually in "models.pack\rigidmodels\flags\textures\building_3d_icons0.dds".