Microsoft has released IE 7 Beta 3 to the general public. Here is an overview of what IE 7 does:
Internet Explorer 7 (IE7) Beta 3 has been designed to make everyday tasks easier, provide dynamic security protection and improve the development platform and manageability. End user improvements include a streamlined interface, tabbed browsing, printing advances, improved search functionality, instant feeds (RSS), dynamic security protection, and more.
Now that you've got the sales pitch I suggest that you do not download it because Internet Explorer has long been a pain, nusance, and a disaster. Instead I recommend Firefox.
System Requirements for IE 7:
Windows XP Service Pack 2 (SP2)
233 Mhz processor or higher
Get it here (download at your own risk).