Originally Posted by Tanker

found this

Use the new Firefox specific shortcuts

Use the updated Firefox 2 shortcut for web page shortcuts, this is to use SHIFT+ALT and then the web page shortcut you want.

So instead of pressing ALT+S you would now press SHIFT+ALT+S.

or:

Change Firefox to use the shortcuts you were familiar with

You can change Firefox 2's web page shortcut key and swap it with the menu shortcut key. This means to Submit in web forms ALT+S would work, and to get to your History menu, SHIFT+ALT+S would be needed.

To change the shortcut keys:

1. Enter 'about:config' in the address bar and press enter.
2. Change ui.key.chromeAccess to have a value of: 5
3. Change ui.key.contentAccess to have a value of: 4