Does it support 3.6?

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!

I already uninstalled 4.0 because I had to submit my term paper and couldn't get on the site. They only support to 3.5. Now I have to use IE for a time, and it really bites. It keeps trying to shut on me, and is so slow. I want my firefox back.

Oh and when I uninstalled or upgraded I clicked to save my bookmarks and stuff, and tehy are all gone.

ok, I installed 3.6, and it works. Thank you. I was afraid to go thru that again. I can't upgrade to 4.0 though, but that is ok for now. Thank s again

Edit: I wrote the below before I saw your last post.

---

Well, it's a big problem if you deleted your profile folder completely. Any chance you made other backups? Any chance you imported your Firefox bookmarks into IE recently??

If you just deleted it in the past hour, an undelete (file recovery) program has a chance of rescuing the folder reasonably well, but as you use your PC and write to the hard drive, the odds of recovery go way down. Here's a free one I've seen recommended: http://www.piriform.com/recuva Download on a different PC to a USB flash drive to avoid further changes to your hard drive.

Anyway, I found 3.5.19: ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.5.19/win32/en-US/