Splitting multi-textured objects into single-textured objects, interface problems

Hi, I’m trying to follow this tutorial: http://vterrain.org/Doc/Blender/fix.html and where I need to select a texture, I’m not seeing the buttons to select that part: like in this image: http://wiki.blender.org/uploads/1/1b/Manual-Material-Multiple-panel_default.png the “New, Delete”, etc buttons in the pink rectangle do not exist for me.

Any ideas what might be wrong here? This is using Blender 2.43

Thanks

Make sure you are in edit mode, so that the panel will show.