I just downloaded Internet Explorer Version 7 and installed it from www.microsoft.com/ie.
ClearType fonts (web pages look different - I think I like it), RSS reader (a few bugs but still nice - it should replace Feedreader nicely), Tabbed browsing (got to get used to the shortcuts), a search box on the toolbar (and it accepts Google as a default!), Phishing filter (slows some webpages down too much, and it won’t let you go to some valid sites. I turned it off). But the Number One reason for getting it: Finally, you can print web pages without the right side getting chopped off! Print to Fit! Yahoo! (Oops. I shouldn’t use that word when referring to a Microsoft product.)
Bottom line: if your computer is Windows XP Service Pack 2, then get IE7. It is quite nice.