How require openrgss

Google translator:
I installed the “openrgss” but I can not use: require ‘openrgss’
Don’t work!
(I’m completely noob)

C:\Projects>test
C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require’: 126: Can not find the specified module.

C:/Ruby200/lib/ruby/gems/2.0.0/gems/rubysdl-mswin32-1.9-2.1.1.1/ext/sdl_ext.so
(LoadError)
from
C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
require' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/rubysdl-mswin32-1.9-2.1.1.1/lib/sdl.rb:17:in<top (required)>’
from
C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
require' from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:inrequire’
from
C:/Ruby200/lib/ruby/gems/2.0.0/gems/openrgss-0.1.5-x86-mingw32/lib/openrgss/rgss.rb:1:in
<top (required)>' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/openrgss-0.1.5-x86-mingw32/lib/openrgss.rb:1:inrequire_relative’
from
C:/Ruby200/lib/ruby/gems/2.0.0/gems/openrgss-0.1.5-x86-mingw32/lib/openrgss.rb:1:in
<top (required)>' from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:inrequire’
from
C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:in
rescue in require' from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:144:inrequire’
from C:/Projects/test.rb:2:in `’