While I'm most likely considered an “early adopter” of digital pictures, I still have many traditional photographs I enjoy integrating into my Movie Maker productions. The dynamic duo I use to integrate them is a Visioneer scanner and the omnipresent PhotoImpact XL image editing software.
Most of you will use a different combination of hardware and software, so I'll stick to the high-level points to consider when scanning and prepping your images. I'm assuming you have the scanner connected to your computer, the proper drivers installed, and your photograph inserted in the scanner. I'm also assuming you understand, in general, how to scan images. The focus here is how to scan images for use in a Movie Maker project.