Hi, Lutz

 Thank you very much for your help. I have installed the connection 
Intenet in my server just now. And I tried to reinstall the rubygem. But 
this time I got:

  Bulk updating Gem source index for http://gems.rubyforge.org
  ERROR: While executing gem...(Gem::GemNotFoundException)
         Could not find rails(>0) in any repository


  What does it mean? And I tied to connect http://gems.rubyforge.org 
with a browser but failed. Can you give me some advices more?? Thank you 
very much!!!



 Yin
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