How to make your web site to be RSS Autodiscoverable?

We just started a new era for our Piflar.net web site. We started a Blog where we will add some comments about special video tips published on the portal. The Blog is giving us then the chance to have an RSS feed and even comments from the readers.
Just a few days ago the Internet Explorer 7 was released like a free download and that means that millions of persons will use it. It means they will have access to its RSS reader capabilities. So that is super important.
The problem was that the IE7 was not discovering automatically that our web site has RSS Feeds! the solution is simple, it is just needed to add one line of HTML code. I found the solution in: http://www.petefreitag.com/item/384.cfm