Transparent Textures

I am trying to follow a tutorial on how to create a plane, and an image with a transparent background (.png file) and it doesn’t work. The real issue is that the Tut is 2.45 and I’m running 2.46 and half the buttons and functions have disappeared.
The tutorial is
All I can do is create a plane, and do nothing with it. I can’t import the image, because I cannot find how to, the UV image editor is non existant.
Anyone have any ideas? I seem to spend moments creating stuff and hours searching for nonexistant buttons.