Stored procedures and Ruby on Rails

I have been wondering for a while, how to use stored procedures with Ruby on Rails. I really like ActiveRecord which hides all the database stuff from you which is great, but what happens if you have to use stored procedures for some reason?

I have found an explanation on how to use stored procedures with Ruby on Rails which is easy to understand and sounds pretty good to me. It's here : http://nasir.wordpress.com/2007/12/03/stored-procedures-and-rails