Okay...I can relate to you.

Everyone else is right: the only way to learn is to watch.  So, there are only a couple of ways to see the best in International Rugby.

If you are a DirecTV subscriber you can order Setanta Sports (http://www.setanta.com) and watch coverage of the Guinness Premiership, Magners League, Air New Zealand Cup, Super 14, Currie Cup, Tri Nations, Six Nations and occasionally some 7's (They also show the IRB's show "Total Rugby" and Sky Sports "The Rugby Club").  From Setanta's North American Website you can also subscribe to Setanta Broadband...it's alright, it has a back catalogue of last years Six Nations and the Guinness Premiership.  Also Mediazone has the "Rugby Channel," which is another subscribtion highspeed internet service (http://www.mediazone.com/channel/rugby/jsp/2006/index.jsp) which shows mainly Southern Hemisphere Rugby.

My personal suggestion is go with DirecTV and get Setanta on channel 615.  They replay and show live mathces and only costs an additional $12US on top of the regular service.  Tivo is also a big key, so you can watch whenever you want.