So you've got a brand new computer with Windows XP installed and you just patch it up to the latest level. When it's done you realize that what you need on your machine is not version 7 of internet explorer but version 6 and you want to revert - or go back to version 6 without screwing your all machine. There is a simple solution but I'm not sure if it works on all installations. if you are lucky enough to have the following file : C:\WINDOWS\ie7\spuninst\spuninst.exe on your machine, you are saved.
Just double click on it and you will be prompted about the fact that IE7 is going to be removed and that a few patches have been applied on top of it. Just tell the machine that you are sure of yourself. IE7 is going to get properly removed from your machine and you will end up in a "clean" install with IE6.
Note that the best way to achieve a nice Internet explorer 6 machine is to reinstall and handy pick the updates that you want to apply on top of service pack two, and make sure you refuse to install version seven of IE.

Guys from http://www.savethedevelopers.org/ won't be happy :D