Admin Panel, Themes, Displaying All CSS

I am getting a strange display issue on a theme I am working on. its based on the default Kubrick theme.

when viewing the theme in the admin/presentation/themes i see the screenshot, but instead of pulling the theme name, description, etc from the top of the style.css its displaying the entire contents of the css file.

any ideas?

Below is an example of what is happening.
http://www.trappedinhell.com/wp-content/uploads/2007/11/themestrange.jpg