No need to wait, that problem has been solved
@lastchip - no need to wait. It looks like you haven't checked out "Modernizr" yet. It's a rather simple yet groundbreaking and novel concept. It is a tiny JS library that does a series of very simple tests to determine what the browser is capable of. You simply modify your CSS with a short series of nicely degrading fall-backs. You program it to look nice in IE7, then you add what is the equivalent of "If the browser also supports the following bells-and-whistles, make it look this way instead." It's awesome and I am using it on a site that still supports IE6 yet has all of these gradients/rounded corners/etc for newer browsers.
