Call function

[Quang]

Hi Ethan,
I have a prolem
-------------
setup.rb
-------------
def google
$ff.text_field(:name,'q').value = "năng động mỗi ngày"
$ff.link(:text,"Giải pháp Kinh doanh").click
end
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main.rb
------------
require 'watir-vapir'
require 'setup.rb'
$ff = Vapir::Firefox.start("google.com")
google
-------------
This error
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require': no such file to load -- setup.rb (LoadError)
from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/
custom_require.rb:
31:in `require'
Help me plz!!