Microsoft has released an updated Internet Explorer Application Compatibility VPC Image containing different Internet Explorer versions on Windows XP and Windows Vista

This download page contains different VPC images, depending on what you want to test.

IE6-on-XP-SP3.exe contains a Windows XP SP3 with IE6 VHD file. Expires July 1, 2010
IE7-on-XP-SP3.exe contains a Windows XP SP3 with IE7 VHD file. Expires July 1, 2010
IE8-on-XP-SP3.exe contains a Windows XP SP3 with IE8 VHD file. Expires July 1, 2010

IE7-VIS1.exe+IE7-VIS2.rar+IE7-VIS3.rar contain a Vista Image with IE7 VHD file. Expires 120 days after first run.
IE8-VIS1.exe+IE8-VIS2.rar+IE8-VIS3.rar+IE8-VIS4.rar contain a Vista Image with IE8 VHD file. Expires 120 days after first run.

Note: For The Vista image, you will need files in that set, downloaded and in the same directory, then run the EXE in the root directory.

  Internet Explorer Application Compatibility VPC Image 4.2