Excellent Rated 5 out of 5 stars
This works in FF6! Can't thank the dev enough for this. Also reviewers Larry Love and Suoshi who's instructions (below) helped me set it up so that each page would open on my homepage. I'm sure setting up for a speed dial page would work too.
Now I can go back to work in the way I've been using FF for many years, no thanks to Mozilla themselves for losing this functionality in the first place.