Well, my computer was pretty much inoperable for a whole day after uninstalling IE 7. I, too, got only a blue screen...everything was zapped...completely gone. I could only use my task manager. I thought I might really end up losing everything. So through my task manager, I googled "iertutil.dll" and some other words and was led to a variety of web sites with options to fix this, all which either failed or were out of the question for me. Nothing was opening up after being downloaded. However, when I found your site, your commands, which I have no grasps of whatsoever, got me to a safe place. I got to the add/remove programs and managed to repair my programs in a different way using my disk. I had tried safe mode and other things offered elsewhere to no avail. Thanks for not making this so uncomplicated when it was a very scary problem! Simple worked, too. Now, something so horrible ended up helping my computer's overall performance! I like your one step at a time, understandable approach, so I bookmarked your site! Thanks again!