After a long beta period, Internet Explorer 7 is not fully released and available for download.  The user interface has been cleaned up with a much more streamlined design–tabbed browsing and RSS subscriptions followed by an inbuilt search box all make it seem rather too much like Firefox; I’m not saying Firefox is a bad application, but an IE based clone of Firefox may well be.  Nevertheless I’ve downloaded and installed IE7 as you can be sore sooner or later you’ll come across a site which requires it!