That's not just an IE6 problem. IE8 has full CSS 2.1 support but can't do css3 rounded corners, opacity, or shadows. You can sometimes fake it with -ms-filter and CSS expressions (htc files) but those work just as well on 6 and 7.
That said, I'm happy to drop IE 6 where not required by the client - 8 may not have html5 or CSS 3 features, but at least it's relatively bug free.
That said, I'm happy to drop IE 6 where not required by the client - 8 may not have html5 or CSS 3 features, but at least it's relatively bug free.