Installing Ruby on Rails on Windows

1. Go to RubyForge and download the latest version of the Ruby one-click Installer for Windows. Install it by running the setup program. I recommend installing it to c:\ruby
2. Download and install RubyGems.
3. When Ruby and RubyGems have both been set up, run this in a terminal/command prompt window to install Ruby on Rails and all its dependencies: gem install rails --include-dependencies
4. Create a folder to hold your rails Apps. I use c:\rails.
5. Create a test application by issuing this command in a terminal/command prompt: rails testApp
6. You should then see a folder called testApp in c:\rails. Go into the testApp folder in a terminal/command prompt and type this: ruby script/server
7. Open your browser and go to http://localhost:3000/.
8. Congratulations, you're on Rails! Source http://railsforum.com/viewtopic.php?id=34