In Firefox 3.6 and later on Windows you can hide the menu bar via "View > Toolbars" or via the right click context menu on a toolbar. Press F10 or press and hold the Alt key down to bring up the menu bar temporarily. Go to "View > Toolbars" or right-click the menu bar or press Alt+V T to select which toolbars to show or hide (click on an entry to toggle the state).

See also Restore the Menu bar in Firefox and http://kb.mozillazine.org/Toolbar_customization

I have tried all those things, plus uninstalling, reinstalling and nothing works. Firefox is not functional for me; currently I am using explorer. I've had two other computer geeks tried to figure this one out and have gotten no where. Other than trying the Alt V or Alt V T M method, what else is there?

Create a new profile as a test to check if your current profile is causing the problems
See Troubleshoot and diagnose Firefox problems (under Make a new profile)
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins"
If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)
See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

See also http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Extension_issues

i pressed F10 then the prob was ok - i then went into the view option and toolbars where my menu bar had been un clicked problem solved :-)

Many thanks.After trying so many different things it seems so easy that it was as simple as pressing F10.Saved me a trip to the serviceman.

Sorry, folks.

I've given up. I am no longer using Firefox because it is so tedious to fight with it. Browser items at the top (tools) should never have been "removed". After at least 10 or more years with Mozilla and its Fire Fox browser, ...I am just no longer using Fire Fox. I am back with the more reliable Internet Explorer. This should not require fixing you damn fools. Adios Mozilla. You seem to have over reached. I guess if I wanted tedium I should have gone to Linux but I think they are less tedious than this stupid set up.

Thanks I pressed the F10 key went to view and checked menu bar THANKS A MILLION I wonder why keyboards don't have a check mark????