Multiple Versions of IE - With IE7, IE8 and IE9!!!

Here is a really good tool for emulating versions IE from 5.5 to 9. For those of you that have used a similar tool in the past (Multiple IE's) you'll notice that this has been discontinued and there are a few difficulties getting it to work with Windows Vista and Windows 7.

Here is a better tool, IETester
http://www.my-debugbar.com/wiki/IETester/HomePage