If you have websites and blog and wanna test your website in Internet explorer than you have to try IETester. IETester is app which helps you to test your website in Internet Explorer 5.5, 6, 7, and 8. IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE8 beta 1, IE7, IE 6 and IE5.5 on Vista and XP, as well as the installed IE in the same process.
Its a nice and easy to App. Download IETester Here
I used to use browsershots and do manually sometimes
This has helped me a lot