I'm not seeing any columns at all at the left of my screen. I'm on a MAC, if that makes any difference in the way that the interface looks. There's a main window that the work area and tools are all in. And there is a menu bar across the top, all with various drop-down menus.The only mention of the word Texture in any of those drop-downs is "Import Texture" under Furniture. I've done this, and used the imported texture on a room wall, but doesn't give the effect i am looking for.