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I need to know how to get Firefox 3 back???? My online college course requires me to have that version and I upgraded to 4 without knowing! HELP!

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I upgraded to version 4 and now I am having difficulty with my online college course. They require me to use version 3, and I need to be able to do my classwork. Please help!

I upgraded to version 4 and now I am having difficulty with my online college course. They require me to use version 3, and I need to be able to do my classwork. Please help!

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First, make a backup of your computer for safekeeping. To back up Firefox, see Backing up your information.

Next, download and save Firefox 3.6 to your desktop for future installation. http://www.mozilla.com/firefox/all-older

Close Firefox 4, and uninstall it. Do not remove your personal data and settings, just the program.

Then finally you can reinstall Firefox 3.6. Unless you have installed an incompatible add-on, it should pick up where you left off. If there are serious issues, please post back with details.

Note: I haven't actually tried this myself!