If I install Beta 4 will it remove my other Version?

I want to test beta 4 but am afraid it will overwrite my exsiting 3.6.13 version.
Thanks Lisa

By default Firefox 4 beta installs in a different location than the release version of Firefox, so you will have both versions installed.
If you want to have both versions, you should create a new profile folder (location where user data is stored) for Firefox 4, then make sure that each version opens the correct profile. You should not use the same profile folder if you switch between different versions of Firefox. For details on how to do that see these links:
* http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
* http://kb.mozillazine.org/Shortcut_to_a_specific_profile
* http://kb.mozillazine.org/Testing_pre-release_versions

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