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Firefox automatically updated to a version that will not run on my version of OSX... can I reinstall my old version and keep my saved bookmarks, etc?

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I am running OSX 10.4.11 on my iMac; Firefox automatically updated to version 12, and now it will not run on my computer. Is there a way to deinstall the new version while keeping my saved bookmarks, etc? If not, how do I deinstall 12 and reinstall the older version of Firefox that worked with my operating system? Thanks.

I am running OSX 10.4.11 on my iMac; Firefox automatically updated to version 12, and now it will not run on my computer. Is there a way to deinstall the new version while keeping my saved bookmarks, etc? If not, how do I deinstall 12 and reinstall the older version of Firefox that worked with my operating system? Thanks.

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Firefox no longer works with Mac OS X 10.4 or PowerPC processors.

You can install Firefox 3.6 from http://www.mozilla.org/en-US/firefox/all-older.html. Please keep in mind that not only is Firefox not receiving any updates (thus rendering it insecure), neither is Mac 10.4 or any of the plugins used on it. Running such an old Operating System is dangerous to your information's security on the internet. something for you to keep in mind.