This obviously doesn't apply to your specific situation, but for anyone who is running Windows 7, a good option is to use XP Mode. The XPM image has IE6 installed and won't expire like the Internet Explorer Application Compatibility VPC images.
Once you've installed XP Mode, create a shortcut to IE in the XP Programs menu (so a shortcut is published to your Win 7 Start menu). You can then launch IE6 side-by-side with IE8 on your Win 7 desktop.
