If you are looking to test your webpages in multiple versions of IE, including IE8 Beta 2, IE7, IE6 and IE5.5 we have a solution for you that works flawlessly in both Windows Vista and Windows XP. Sometime back we had mentioned about another such tool called IE Collections, but unfortunately it did not work in Windows Vista.
Related: Install Internet Explorer on Linux
In addition to testing with the four listed browser versions, you can also run tests for the currently installed version of IE on your website. Definite must have for designers and developers who need to test on multiple versions of IE.