I posted a tutorial on the ADS blog showing how to get a Ruby on Rails
app up and running under JRuby on a Mac. The tutorial is here:
http://www.techcfl.com/blog
Digg it if you like it and share aplenty. I look forward to feedback.
Sincerely,
Robert Dempsey
http://www.techcfl.com
http://www.railsforall.org