Rails 3.0.10 インストール

C:\Documents and Settings\torao> gem install rails
Fetching: activesupport-3.0.10.gem (100%)
Fetching: builder-2.1.2.gem (100%)
Fetching: i18n-0.5.0.gem (100%)
Fetching: activemodel-3.0.10.gem (100%)
Fetching: rack-1.2.3.gem (100%)
Fetching: rack-test-0.5.7.gem (100%)
Fetching: rack-mount-0.6.14.gem (100%)
Fetching: tzinfo-0.3.29.gem (100%)
Fetching: abstract-1.0.0.gem (100%)
Fetching: erubis-2.6.6.gem (100%)
Fetching: actionpack-3.0.10.gem (100%)
Fetching: arel-2.0.10.gem (100%)
Fetching: activerecord-3.0.10.gem (100%)
Fetching: activeresource-3.0.10.gem (100%)
Fetching: mime-types-1.16.gem (100%)
Fetching: polyglot-0.3.2.gem (100%)
Fetching: treetop-1.4.10.gem (100%)
Fetching: mail-2.2.19.gem (100%)
Fetching: actionmailer-3.0.10.gem (100%)
Fetching: thor-0.14.6.gem (100%)
Fetching: rdoc-3.9.3.gem (100%)
Depending on your version of ruby, you may need to install ruby rdoc/ri data:

<= 1.8.6 : unsupported
 = 1.8.7 : gem install rdoc-data; rdoc-data --install
 = 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!
Fetching: railties-3.0.10.gem (100%)
Fetching: bundler-1.0.18.gem (100%)
Fetching: rails-3.0.10.gem (100%)
Successfully installed activesupport-3.0.10
Successfully installed builder-2.1.2
Successfully installed i18n-0.5.0
Successfully installed activemodel-3.0.10
Successfully installed rack-1.2.3
Successfully installed rack-test-0.5.7
Successfully installed rack-mount-0.6.14
Successfully installed tzinfo-0.3.29
Successfully installed abstract-1.0.0
Successfully installed erubis-2.6.6
Successfully installed actionpack-3.0.10
Successfully installed arel-2.0.10
Successfully installed activerecord-3.0.10
Successfully installed activeresource-3.0.10
Successfully installed mime-types-1.16
Successfully installed polyglot-0.3.2
Successfully installed treetop-1.4.10
Successfully installed mail-2.2.19
Successfully installed actionmailer-3.0.10
Successfully installed thor-0.14.6
Successfully installed rdoc-3.9.3
Successfully installed railties-3.0.10
Successfully installed bundler-1.0.18
Successfully installed rails-3.0.10
24 gems installed

C:\Documents and Settings\torao> rails -v
Rails 3.0.10

おっ問題もなく終わったし JRuby も Ruby 1.9.2 と認識しているようである。