I'm currently using a website template that has rounded corners and box shadow in the CSS and it seems that Internet Explorer 8 is not recognizing it. It only works in Firefox and Chrome. I found this page below and did as they instructed and it still isn't working. Any ideas?

http://www.fetchak.com/ie-css3/

IE does not support a lot of CSS3 features, this is only 1 of them.
If your behavior is not working, then you need to re-visit the documentation for the behavior and make sure you're addressing the path issue as specified.

You could also try this - http://css3pie.com/