This installer is great! Nice work! It's got me thinking that it must be possible to enhance it for older versions of IE too, such that it downloads the old versions from:

http://browsers.evolt.org/?ie/32bit/standalone

Then installs the older browsers of your choice - creating icons, adjusting the registry*, adding the browselc.dll* and fixing the conditional comments issues*.

* = http://www.positioniseverything.net/articles/multiIE.html

That would make for a fantastic tool! (Hint, hint...)

;)