I recently needed to have a look to see what a website of mine looked like in IE6, but found that all my computers now had IE7 installed.
It turns out that it wasn’t that easy to uninstall IE7 from the computer I had chosen, upon going to the control panel and the Add and Remove Software wizard, I selected Microsoft Internet Explorer 7, but there was no remove button.
I finally stumbled upon this link which show’s you a couple of ways to uninstall IE7.
This worked brilliantly for me, and allowed me to correct my web problems.