During Rails install - ERROR: Failed to build gem native extension.

Installed Ruby 1.8.6-26 Final Release....then tried to install Rails and got error show below.... Any ideas ?

PS. Had issues with 1.8.6-27 with sql lite and simple app work so went to this version which gave         me another error.... Having no luck :<

C:\Ruby>gem install rails Bulk updating Gem source index for: http://gems.rubyforge.org Install required dependency rake? [Yn] Y Install required dependency activesupport? [Yn] Y Install required dependency activerecord? [Yn] Y Install required dependency actionpack? [Yn] Y Install required dependency rack? [Yn] Y Install required dependency test-spec? [Yn] Y Install required dependency camping? [Yn] Y Install required dependency markaby? [Yn] Y Install required dependency builder? [Yn] YV Install required dependency metaid? [Yn] Y Install required dependency fcgi? [Yn] Y Building native extensions. This could take a while... ERROR: While executing gem ... (Gem::Installer::ExtensionBuildError)     ERROR: Failed to build gem native extension.

ruby extconf.rb install rails checking for fcgiapp.h... no checking for fastcgi/fcgiapp.h... no *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options.

Provided configuration options:         --with-opt-dir         --without-opt-dir         --with-opt-include         --without-opt-include=${opt-dir}/include         --with-opt-lib         --without-opt-lib=${opt-dir}/lib         --with-make-prog         --srcdir=.         --curdir         --ruby=C:/Ruby/bin/ruby         --with-fcgi-dir         --without-fcgi-dir         --with-fcgi-include         --without-fcgi-include=${fcgi-dir}/include         --with-fcgi-lib         --without-fcgi-lib=${fcgi-dir}/lib

Gem files will remain installed in C:/Ruby/lib/ruby/gems/1.8/gems/ fcgi-0.8.7 for inspection. Results logged to C:/Ruby/lib/ruby/gems/1.8/gems/fcgi-0.8.7/ext/fcgi/ gem_make.ou t

C:\Ruby>

You're not crazy. It's broken. cured by: gem update --system

These instructions work great: http://wiki.rubyonrails.org/getting-started/installation/windows

Thanks to Matt Jones for the diagnosis.