It should work fine with Lion. I running Firefox 7.0 with Lion 10.7.1

First double click on the DMG file to 'mount' it in finder. A special finder window should appear with the Firefox icon in it. This is the new version of Firefox you just downloaded. You should be able to now drag that icon to your applications folder. (There may be a link in the same finder window. Just drag the Firefox icon on top of this link)

To put Firefox into the dock, just drag the icon from where you installed it and drop it onto the dock.

Thanks for advice. I did as you say, and have the 6-2.o.2dmg in the dock, but double clicking on it opens the install window again. I have 3.6.23 on iMac, works fine. The file 'find info' on the .dmg file shows the 6.2 info, 340 KB on disk.

Do not put the .dmg file in the dock. When you installed Firefox, you dragged its icon out of the disk image and dropped it into a directory on your hard drive. Drag the Firefox icon from that directory on your hard drive where you installed it and drop that on the dock.

Hello again. Could not get firefox into Applications folder. So trashed all <firefox> items and started again. Using Safari. I go to <Firefox.com>. Get the 'Thanks for choosing Firefox" window. File does not download after a few minutes, then I click on 'click here" if download doesn't start'. That zips to a tiny loading bar far top right of screen. No bar movement there either. Using Lion on Macbook Air. I quit Safari, get "downloads are in progress message' Anyway I quit, nothing happening. Re-opening Safari throws me back to the download window!

What to do?

I just downloaded the FF 7.0.1 .dmg file from here using Safari. http://www.mozilla.org/en-US/firefox/all.html

Select the language you want and use the link in the middle column.

If you tried to install Firefox in the system Applications directory, did you type in your admin password to get it to go in? Adding anything to that directory requires me to enter the admin password. Mind you, I do not install Firefox in there. I set up another Applications directory in my standard account and then created subdirectories for various categories in that. That is where I install Firefox.