Microsoft knows the pain of web developers who have been trying to test their websites in both IE6 and IE7. For this reason Microsoft has released a Virtual Imaged pre-activated copy of Windows XP Professional that will stop working as of April 1st, 2007. This copy must be loaded in Virtual PC 2004 or 2007 which is a free download also. This will allow developers to install IE7 on there main machine and test there website in IE6 on a virtual Machine.
This also allows developers who run Vista as a main Operating System to test out their applications in XP.
I think this is great news!