How to Force Install miniFox Rated 5 out of 5 stars
To force install an addon, go to
https://addons.mozilla.org/en-US/firefox/addon/6543. To force install minifox (after installing Nightly Tester Tools), go to https://addons.mozilla.org/en-US/firefox/addons/versions/607.
Beware: several peculiarities will arise from force installing minifox on Firefox 3. But so far, nothing too bad.