Hi comp.lang.ruby I am doing my first thing with ActiveRecord (without Rails), and to help me out I have the 'Pro ActiveRecord' book from APress, which is a fine resource, except from one annoying thing; all pieces of sample code in the book uses the statement: require 'activerecord' which refuses to work on both my windows-ruby and ubuntu-ruby setups. Searching this group I learned that using the statement: require 'active_record' solves that problem. What am I missing? What's the difference between the two, and why is only one of them working on my code? regards, henning