Problem with installing rails-3 plugins (Win7)

I'm newbie at ruby, I spent couple hours trying to find the way to install the plugin... but without any success, so here I am, very frustrated... please help.

OS: W7 ruby: ruby 1.9.2 rails: 3.0.5 msysgit: 1.7.4 (i did not any changes, just installation) (is there anything else I should of mentioned?)

ruby script/plugin install git://github.com/thoughtbot/paperclip.git/
C:\Ruby\Ruby192\bin\ruby.exe: Permission denied -- script/plugin (开发者_运维问答LoadError)

Thank you!

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The script/plugin command (and all other script/<exec> commands) is no longer used in Rails 3, instead you should do:

rails plugin install git://github.com/thoughtbot/paperclip.git