Such was not the case with Mozilla 1.7.3. I just installed it and it just worked and looked, pretty much, like my old browser, with all the bookmarks that I had on my personal toolbar. Better yet, the mail tool let me resubscribe to my unsubscribed mail folders, which NS 7 just wouldn't let me get anymore.
Yay for painless upgrades!!
Wahoo! Isabel just called me to say that they're going to get Jet. Now for some naptime...