IE-CSS3 is a script to provide Internet Explorer support for several of the popular new styles available in the upcoming CSS3 standard. How it works, if you view the page in Internet Explorer, some of the elements will be rebuilt by the script in Vector Markup Language VML, an IE-specific vector drawing language. VML supports things that are missing from IE’s CSS implementation like rounded corners and blur effects…
Direct link: CSS3 support in Internet Explorer 6, 7, and 8