Image load problem

hi, maybe someone can help me - I am trying to use the code from this turorial which i found for free online:

http://www.layoutgalaxy.com/html/htmnewletter43-page1.htm

Problem is, when I download the tutorial as his, and try to change the images which load, it doen’t recognize them when the swf is generated. I have even tried using the same exact size images, file type (.jpg), and naming system. Ironically, it DOES work when I replace a .jpg with an .swf (yes, I do put the images in the correct file location).

This seems really strange to me…does anyone know why this might be happening?