Possible Duplicates:
Multiple IE instances on one machine.
Running IE6, IE7, and IE8 on the same machine
This question might belong to the Super User site, but then again: this is about debugging HTML, CSS and JavaScript.
Am I able to run Internet Explorer 5.5, 6.0, 7.0 and 8.0 on a single Windows Vista install? If yes: how?
Update: Duplicate of this question