Is it really true that you are using version 3.0.9? This is an old version that is vulnerable to security issues.

You can install version 3.6.17, which has a more similar interface to what you have, from here: http://www.mozilla.com/firefox/all-older

Or you can leap to Firefox 4 here: http://www.mozilla.com/firefox/

If you don't make regular backups of your computer, it's a good time to back up your settings folder. See the section of this article on copying your entire Firefox profile: Backing up your information.

Does that work?

I am trying to download 4.0 I get the 4.0 setup but nothing more. When I try to get my profile I get 373dfd.default

It's normal to get a setup file that you have to run after you close Firefox. Do you get an error when you double-click it? Nothing happens?

(Because profile folders are named randomly, I think you are in the best position to determine the name.)