Changing the lumber icon... HELP!

I have seen in games people change the icon for lumber to make it different things, such as blood in Tides of Blood, or heat in Ice Troll Tribes. I need to do this for my new game... and I cant find the texture anywhere. Help?

First go to "Advanced" in the menu.

Then go to "Game Interface"

It should be under "A) Icon - Lumber"

If Raw data is selected "LumberIcon"

Hope this helps!

I found it, thanks alot!