Ruby on Rails

Hi every:
I'm starting to learn Ruby and RoR and have some problems getting things
work. I have a CentOS 6 dev server in which I follow this guide (sorry
for the spanish)
http://articles.slicehost.com/2009/4/7/centos-ruby-on-rails to install
Ruby and RoR. So I get installed gems 1.3.1 but if I run gem update and
gem update --system then I go back to gems 1.8.17 and then rails said me
that RubyGems 1.3.5> is needed to install. See the commands execute by
me below and the results of each:

[root@devserver rubygems-1.3.1]# gem install rails
ERROR: Error installing rails:
i18n requires RubyGems version >= 1.3.5

[root@devserver rubygems-1.3.1]# gem update
Updating installed gems
Nothing to update
[root@devserver rubygems-1.3.1]# gem update --system
Updating RubyGems
Updating rubygems-update
Successfully installed rubygems-update-1.8.17
:0:Warning: Gem::SourceIndex#search support for String patterns is
deprecated
Updating RubyGems to 1.8.17
Installing RubyGems 1.8.17
RubyGems 1.8.17 installed

Any help on this? Regards and thanks in advance
--
Ing. Reynier Perez Mira
eMail: reynierpm@gmail.com, reynierpm@hotmail.com
Skype: reynierpm
Mobile: +58 424.180.5609
Site: http://reynierpm.site90.com

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