You don't have to copy these textures in the Zurich folder. They normally reside on the main FS texture folder, and Zurich can use them from there. If you don't have it, it means your FS installation is corrupted, because they are installed by default. If you don't want to reinstall FS9 from scratch, you can try looking for the missing files in the .CAB archives on the FS9 installation CDs. A unzipping utility, like Winrar, will be needed.