We all know that IE 6,7 not support the new increase CSS3 property, even with IE8 which is not fully ready for CSS3 yet. You know what, there is a script hack that helps you enable CSS3 support in IE (even with IE6) with new CSS3 properties, including: border-radius (rounded), box-shadow ( shadow), text-shadow (the shadow of the text).

http://aext.net/2010/04/css3-ie-support/