IE 6 and IE 7 together

Did you realize the possibility of running e.g. IE6 and IE7 together? - I didn't till today...

I had installed IE7 Beta2 when I realized, that I can't work on Gadgets for Live.com with IE7 on my development-server because of security limitation (do not allow cross-domain XmlHttp requests from trusted sites). - So I started to google, and found a solution which works for me: I installed IE7 stand-alone with some limitation - but still okay for me.... read the following articles for more information:

http://weblogs.asp.net/jgalloway/archive/2006/02/02/437196.aspx

http://www.tech-recipes.com/internet_explorer_ie7_tips1188.html