WebTV needs to go on the garbage heap ;)
\r\n\r\nThere's a new incarnation of that idea being pushed at work, we had to basically set up completely segregated versions of our sites on subdomains with their own templating and whatnot to deal with it and send the users over there, because there's no way to detect it (thanks to the way it works, to a server it's indistinguishable from normal IE 6).