I have found the best way to deal with multiple Internet Explorer testing for web development is to utilize Microsoft’s Virtual PC 2007 and their ‘developer licensed’ virtual machines with IE pre-installed. Pre-packaged Windows Operating systems with Internet Explorer are available here: http://www.microsoft.com/downloads/details.aspx?FamilyId=21EABB90-958F-4B64-B5F1-73D0A413C8EF&displaylang=en, though I will forewarn you that you will need to re-download them at a later date as they do expire.
Apparently, Windows 98 can now be installed with a generic license (free) so Internet Explorer 6 can be safely installed onto a Win 98 VM. Being Win 98, it doesn’t hog many resources making it a great solution for IE6 testing.
Happy testing.
i am a firefox user more than an internet explorer user but it seems that Internet explorer 8 is very stable and it its loading time for webpages is faster too.