Redmine, Mysql, Ubuntu 10.4 LTS

Hello.

I'm trying to install redmine and following this instruction:

http://library.linode.com/development/p … untu-10.04">http://library.linode.com/development/project-management/redmine/ubuntu-10.04

… except I want to install with using mysql database.

I have correctly configured my config/database.yml:

production:

adapter: mysql

database: redmine

host: localhost

username: …

password: …

When I following recommendations here:

http://www.redmine.org/wiki/redmine/RedmineInstall

I'm running:

gem install mysql

And I get this error:

http://i32.tinypic.com/6elnns.png

Can you help me please as I cannot find any instructions to install redmin with mysql in your Linode Library.

Thanks,

Anton