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Is it possible to have two Firefox browsers (3&20) on the same OS?

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I have been using my 3.6.28 Firefox for more than 3 years and still want to use it in the future. Some functions are not working when I visit websites so I need to install the newest as to see them. I have Google Chrome as my second browser but would like to swap it for the latest Firefox. Read on some forum that its not possible to have two Firefox browsers on the same Win OS. Is it possible to have both my old Firefox 3 and Firefox 20 installed on the same Win XP OS as teo different programs?

I have been using my 3.6.28 Firefox for more than 3 years and still want to use it in the future. Some functions are not working when I visit websites so I need to install the newest as to see them. I have Google Chrome as my second browser but would like to swap it for the latest Firefox. Read on some forum that its not possible to have two Firefox browsers on the same Win OS. Is it possible to have both my old Firefox 3 and Firefox 20 installed on the same Win XP OS as teo different programs?

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Yes it is possible, but you need to create a new profile for the 2nd version.

http://forums.mozillazine.org/viewtopic.php?f=23&t=2249039