Possible Duplicate:
Running Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on the same machine
Is there a way to have Internet Explorer 8 and Internet Explorer 6 side by side without virtualizing?
I used Multiple IEs which works fine with Internet Explorer 7, but since I installed Internet Explorer 8 beta 2, Internet Explorer 6 started behaving oddly (that is, more than usual).
I also use virtualisation. I've got Virtual PC 2007, which is a free download from here, on my machine and have downloaded the Internet Explorer Virual PC images from Microsoft. You can get the images here.