If you have installed Internet Explorer 8 and if you have any problem with using it then you can easily remove IE8 by this KB fix it (957700)
Microsoft has just released another Fix it Knowledge Base (KB) article which Uninstalls Internet Explorer 8.
When you remove Internet Explorer 8, your earlier version of Internet Explorer is restored with your customizations (such as add-ins, Favorites, and your home page).
To remove IE8 automatically download below file and run it.