Great news from the people who brought us Internet Explorer. They’ve released a Virtual PC image containing a time-limited WinXP SP2 with IE 6 for all our testing pleasure. No licensing required! And if you don’t have a copy of Virtual PC yet, they’ll give you Virtual PC 2004 for free to run it all.
Read the IEBlog on how to run IE6 and IE7 on a single PC.
Note: Haven’t tested it myself yet. I need to do some HD-cleaning first.