Hi i am using rails version 3.0.7 when i run rails generate model task name:string i m getting following warning

WARNING: This version of mysql2 (0.3.2) doesn't ship with the ActiveRecord adapter bundled anymore as it's now part of Rails 3.1
WARNING: Please use the 0.2.x releases if you plan on using it in Rails <= 3.0.x
/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_specification.rb:71:in `establish_connection': Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (no such file to load -- active_record/connection_adapters/mysql2_adapter) (RuntimeError)
    from /usr/lib/ruby/gems/1.8/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_specification.rb:60:in `establish_connection'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_specification.rb:55:in `establish_connection'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-3.0.7/lib/active_record/railtie.rb:59
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.7/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.7/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.7/lib/active_support/lazy_load_hooks.rb:43:in `run_load_hooks'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.7/lib/active_support/lazy_load_hooks.rb:42:in `each'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.7/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-3.0.7/lib/active_record/base.rb:1904
    from /home/sun/railsapp/dog/vendor/plugins/attribute_fu/init.rb:1
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.7/lib/rails/plugin.rb:81
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.7/lib/rails/initializable.rb:25:in `instance_exec'
    from /usr/lib
mysql ruby-on-rails-3
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