How to use the render result from one scene as a texture in another scene Maybe there's a better way to go about this. What I want to do is render 2 scenes for every frame and use the result from the first render as a texture in the next. 

Example: 

Scene 2: A room animated with a computer on the desk.

Scene 1: The screen of the computer. 

This probably isn't even possible in the method I'm describing, but I think you'll see what I'm getting at. How can this be done in Blender Internal?
Neither Cycles not Blender-Internal support this, You just have to render out the files to an image or a movie, then load them in as an image texture afterwards.