Installing mongrel for Rails 3 app?

I first tried a simple

gem 'mongrel'

Then later the solution found here

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!