It was a pretty straightforward matter to edit a single file "resource.pcx" in Civ3 to change the resource graphics. I find that in Civ4, I have a lot of trouble even seeing some of the resources and whould like to use mre stylized versions (like an actual wheat stack). Where is this file and is there something special needed to edit it? Any help would be appreciated. Thanks.

In my Mod (GreenMod) thread I will write a little guide how to mod ressources, it will be there in the new year. Some people asked me already for this.

Okay, finished now: http://forums.civfanatics.com/showthread.php?t=153584