Installing mongrel for Rails 3 app?

I first tried a simple

gem 'mongrel'

Then later the solution found here

http://jan.varwig.org/archive/rails-3-and-mongrel

gem "mongrel"
gem "cgi_multipart_eof_fix"
gem "fastthread"
gem "mongrel_experimental"

But still can't get it to work...

Anyone?

$ gem install mongrel --source http://gems.rubyinstaller.org
mongrel 1.1.6 installed

# Gemfile
gem "mongrel"
gem "cgi_multipart_eof_fix"
gem "fastthread"

$ rails s
=> Booting Mongrel
=> Rails 3.0.0.beta3 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server

Yeah, baby, yeah!