there is no longer any rugby on what used to be Fox Sports World and now called Fox Soccer Channel - your best bet is to watch online with The Rugby Channel at Mediazone if you have a decent internet connection (you can also download games) or to get DirectTV and and get the Setanta Sports Channel which shows both types of rugby - rugby union and rugby league, they also have a broadband service available online where you can watch live streamed games - this is $10 a month - if you're interested in the Six Nations specifically you should go with Setanta - they're showing the games this weekend. Another option if you want real high quality rugby is to go to *REMOVED*.com - register with them and their partner site Diwana for torrent downloads which are pretty good quality.