ruby on rails w/sqlite

I have not go forward ruby on rails w/sqlite. Because Debian has not "sqlite-ruby" (libdbd-sqlite-ruby has). Then I try to install sqlite-ruby.
At 1st, I went
http://people.debian.org/~akira/rubygems/ for installing rubygems. And uscan, uupdate and debi (yes, success).
Next, I tryed to use dh_rubygems.rb (written by ay). Then I went
http://gems.rubyforge.org/gems/sqlite-ruby-2.2.3.gem to install sqlite-ruby..... so much for today.