I am working with flash CS3, and I have done a web banner for a site. the
people at the site, whom will be placing the banner on to the site, are working
with flash 8. I tried to save the file down to a flash 8 document, but it was
still messed up for them. does anyone know if I am doing anything wrong, or if
there is any way that I can get a free version of Flash 8 to do this project
in? thanks!

Saving as a Flash 8 document should work, I've never had any problems. What's
messed up about it?

You can get a free trial of Flash 8, which will be good for about a month to
test and make sure they will be able to open your files correctly...