Internet Explorer!!!! Get a real browser like Firefox, which reads RSS feeds with no trouble at all!
Only joking - in order to read RSS feeds, you need a news-aggregator. Firefox has one built in, which it calls Live Bookmarks. Otherwise, there are plenty others out there, such as Google Reader, NewsGator, RRS-Reader, or look at this list
http://www.newsonfeeds.com/faq/aggregators for hundreds more.
You can also add an RSS feed to a personalised Google or Yahoo start page, or a personal home page like PageFlakes.