Hi gurus and nubys, I believe I spotted a bug in rubygems or in the packaged gem for madeleine. I got this: C:\Documents and Settings\gabriele>gem --rubygems-info RubyGems: - VERSION: 1.0 - INSTALLATION DIRECTORY: c:/programmi/ruby/lib/ruby/gems/1.8 - GEM PATH: - c:/programmi/ruby/lib/ruby/gems/1.8 - REMOTE SOURCES: - http://gems.rubyforge.org C:\Documents and Settings\gabriele>irb -r rubygems irb(main):001:0> require_gem 'madeleine' => true irb(main):002:0> require_gem 'madeleine/clock' LoadError: Could not find RubyGem madeleine/clock (> 0.0.0) from c:/Programmi/Ruby/lib/ruby/site_ruby/1.8/rubygems.rb:25:in `require _gem' from (irb):2 irb(main):003:0> running pragprog installer on windows xp: C:\Documents and Settings\gabriele>ruby -v ruby 1.8.1 (2003-12-25) [i386-mswin32]