How do I make Firefox my default browser?
To make Firefox your default web browser:1. Select Tools > OptionsEdit > PreferencesFirefox > Preferences and click the “Check Now” button in the General panel.
When setting a computer to use Firefox as the primary browser, it is helpful to disable Internet Explorer’s checks to make it the default browser:
Start > Settings > Control Panels > Internet Options > Programs > Internet Explorer should check to see whether it is the default browser
On campus, some sites are not browser neutral and require Internet Explorer. To facilitate using IE with Firefox, check the Firefox plug-ins IE Tab or IE View