also http://docs.rubygems.org/read/book/3 RubyGems is a system that aims to provide the following (it is still in development): A development framework that allows developers working on pure-Ruby projects to packages those projects into a single file that contains their source files as well as metadata describing the project. This metadata includes the name for the project, the author's name, a category, a version, a description, and even dependencies the project has. Also, locale metadata as in: lang=en, country=us, charset=us-ascii [HoracioLopez vruz] it would be install, include is for ruby programs I would think. http://docs.rubygems.org/read/chapter/19 see if any of this might be your problem. Do you have several ruby installed? On the mac for example, Ruby comes pre installed. how about this? could that help? says it is for windows http://instantrails.rubyforge.org/wiki/wiki.pl how about this http://blog.leetsoft.com/articles/2005/06/17/installing-rails-made-easy http://home.leetsoft.com/dropbox/private-ruby/install It is not up to date, apparently some directory has changed, but it shows how someone thinks it should work.