Rails 2.0.2 has just been released, more bugfixes than new addons, but worth the download (running it here now).
However it's only available from http://gems.rubyonrails.org at the moment, but to get it do:
sudo gem install rails --source http://gems.rubyonrails.org
Here, your actually specifying which repository to use to find the gem.
To see what your default source location is:
sudo gem sources
Enjoy,
