can't run webrick server

The environment that i am working on is Windows xp and the
configurations are,

Ruby 1.8.7 [i386-mingw32]
Rails 2.3.5
Gem 1.8.17

run -->ruby script/server

these errors are occur:
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/gems/1.8/gems/
activesupport-2.
3.5/lib/active_support/dependencies.rb:156:in `require'
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/gems/1.8/gems/
activesupport-2.
3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/gems/1.8/gems/
activesupport-2.
3.5/lib/active_support/dependencies.rb:156:in `require'
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/gems/1.8/gems/
rails-2.3.5/lib/
commands/server.rb:84
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/site_ruby/1.8/
rubygems/custom_
require.rb:36:in `gem_original_require'
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/site_ruby/1.8/
rubygems/custom_
require.rb:36:in `require'
        from script/server:3

anyone tell me the solution.Thanks in advance..

try “rails s” or “rails server”.

I'm new too. Anyway, how 'bout trying 'bundle exec rails s'.

thanks Gijaldon…

Now my webrick server started.