(OS X 10.4.11, fully updated, Macbook Pro 15")

I need shockwave for online work required for one of my classes and its not working. I just downloaded and installed the new version. It will show the little Adobe Shockwave "splash screen" thing with the load bar under it, but it WONT LOAD. Its not working in Safari, Firefox, OR Opera. Anyone have any ideas?

Ive reset safari and restarted my computer but neither has fixed it.