Trouble installing/configuring Rails

Hello,

I'm absolutely brand new to Ruby on Rails, and am trying to install it
on my host server. My host server (Netfirms) provides limited support
for Ruby on Rails, meaning they have the programming script and db
bindings pre-installed. We simply copy the files to our directories
and configure to our db.
http://support.netfirms.com/idx.php/0/649/article/Ruby-on-Rails-Quickstart-Guide.html

I am running this with MySQL

class CasualtiesController < ApplicationController
   scaffold :casualties
end

-- gw