The first post in this thread is kinda confusing!
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and
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Why Am Unable To Install Internet Explorer 8 In Windows Xp Sp3?
IE8 won't install. Receive the following:
Are you trying to uninstall or install IE8? They are different things you know -.- Everyone else seems to have figured it out that you want to uninstall(they don't apparently look anywhere other than the topic title, I'm very disappointed in them now

Just Kidding)
I don't know how to uninstall IE, but I know how to disable it in XP:
1. Click the "start" button and choose "set program access and defaults", this will open up a new window.
2. In the current window there are icons on the left side, click on the one with "add/remove windows components". This will open a new window.
3. Now, there are component names and checkboxes are next to them. uncheck "Internet Explorer" and click ok.
It'll now take a while...
done!
I don't know what those errors mean if you're trying to install IE8. If you still get the error, try disabling IE first with the step-by-step instructions above and installing IE8 after that.
Edited by Baniboy, 24 October 2009 - 05:35 PM.