installation problem

[Christophe]

Hello
I've learn a lot of things to install your program (install ruby on
rail on my debian, learn how ruby progs are working ...)
But now I'm locked. I modify config/database.yml and config/
environment.rd because my gem version is 1.3.4.
In my terminal I go in script, and when I try "ruby server" I've the
folowing error message :
./../config/boot.rb:26:Warning: Gem::SourceIndex#search support for
String patterns is deprecated, use #find_name
Cannot find gem for Rails ~>1.3.4.0:
Install the missing gem with 'gem install -v=1.3.4 rails', or
change environment.rb to define RAILS_GEM_VERSION with your
desired version.

if I do a "gem -v" the answer is 1.3.4
and if I do a "gem list" the answer is
*** LOCAL GEMS ***

actionmailer (2.3.2)
actionpack (2.3.2)
activerecord (2.3.2)
activeresource (2.3.2)
activesupport (2.3.2)
mysql (2.7)
rails (2.3.2)
rake (0.8.7)
rubygems-update (1.3.4)

Could you help me with this ? Now I don't know what to do.

Thanks a lot
Christophe