New tutorial on scrolling a 2D background using XNA on my site XNADevelopment. It covers creating the project, adding images to the project and scrolling those images horizontally in a continuous loop.
I've posted the tutorial and the source code if you're interested. So far, I'm SUPER impressed with XNA development and just how easy it has been. The support from the XNA developers in the Microsoft forums has been outstanding as well. These guys are really going over and above helping out all of us XNA newbies as we struggle to fly.
Game development really has just gotten just a whole heckuva lot more approachable by the general population.