A small tip for anyone trying to install Radiant on their Dreamhost.com account.

The original instructions I found said that three ENV lines that had to be added to the dispatch.fcgi file had to be before the RailsFCGIHandler.process! line. Well it turns out they have to be before the require lines, e.g.:
[source:ruby]
ENV['RAILS_ENV'] = 'production'
ENV["GEM_HOME"]="/home/myaccount/.gems"
ENV["GEM_PATH"]="/home/myaccount.gems:/usr/lib/ruby/gems/1.8"
require File.dirname(__FILE__) + "/../config/environment"
require 'fcgi_handler'
RailsFCGIHandler.process!
[/source]