code RAILS How to setup

What I've been through to have a working Rails server.

http://rubyonrails.org/download
Install 1.9.3

http://rubygems.org/pages/download
Download from above.
Unpack into a directory and cd there
Install with: ruby setup.rb (you may need admin/root privilege)

> gem install rails

https://github.com/downloads/oneclick/rubyinstaller/DevKit-tdm-32-4.5.2-20111229-1559-sfx.exe
DevKit-tdm-32-4.5.2-20111229-1559-sfx.exe
Extract DevKit to path C:\Ruby193\DevKit

( http://stackoverflow.com/questions/8100891/the-json-native-gem-requires-installed-build-tools )
1) Download Ruby 1.9.3-p0
2) Download DevKit file from http://rubyinstaller.org/downloads (DevKit-tdm-32-4.5.2-20110712-1620-sfx.exe)
3) Extract DevKit to path C:\Ruby193\DevKit
4) cd C:\Ruby193\DevKit
5) ruby dk.rb init
6) ruby dk.rb review
7) ruby dk.rb install

> rails new [projectName]
navigate to project folder
> rails server
http://localhost:3000/

http://guides.rubyonrails.org/getting_started.html