According to Mozilla, switching from Internet Explorer to Firefox is like "trading in your minivan for a sports car." If you have grown tire of Microsoft's Web browser, and would like to switch to Mozilla Firefox, you'll find the transition smooth and hassle free. It's not necessary to remove Internet Explorer; in fact, you cannot remove it without making major changes to the registry.
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Download the latest version of Mozilla Firefox. Follow the Mozilla prompts to complete the installation of the browser.
Double-click on the Mozilla Firefox icon to open Firefox. Click on "File" to begin importing from Internet Explorer. Select "Import." Choose "Internet Explorer" in the dialog box, and then click "Next."
Select the items you want to import. You can choose "Favorites," "History," "Cookies" or "Internet Options." Select one or all of the choices. Click "Next" to import the items.
Click on "Tools" and select "Internet Options." Click on the "Advanced" tab. Click "Check Now" next to "Check if Firefox is the Default Browser." Click "Yes" to set Firefox as your default Web browser.