MySQL入れる

Ruby Win 
C:\WINDOWS\system32>gem install mysql
Select which gem to install for your platform (i386-mswin32)
 1. mysql 2.7.3 (mswin32)
 2. mysql 2.7.1 (mswin32)
 3. mysql 2.7 (ruby)
 4. mysql 2.6 (ruby)
 5. Skip this gem
 6. Cancel installation
> 3
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 mysql
can't find header files for ruby.


Gem files will remain installed in C:/Program Files/ruby-1.8/lib/ruby/gems/1.8/g
ems/mysql-2.7 for inspection.
Results logged to C:/Program Files/ruby-1.8/lib/ruby/gems/1.8/gems/mysql-2.7/gem
_make.out

MySQL本体はXAMPPでいってみる
http://www.apachefriends.org/en/xampp-windows.html
http://web.sfc.keio.ac.jp/~shokai/archives/2006/02/xampp.html