Install the msql-common, mysql-server packages and, if you want to administer mysql via a gui interface through your webbrowser install phpmyadmin. You can just accept the default options that dpkg asks you when it is setting up the msql packages. Then start the mysql server:
    $ mysqladmin -u root password 'mysqlpass'*
Note substitute mysql pass for whatever password that you want to use. Then using your browser go to http://localhost/phpmyadmin/ and log on as root using the password that you just created. Click on users and then add a new non system user to mysql. This user will be used to access and administer the apc-aa database and will be entered in the apc-aa/include/config.php3 file. I also chose to use this user as the superadmin account which is the first account that you create in Action Apps, and which you use to create your slices. After you have added the user you have to reload the server and flush priveleges.
   $ mysqladmin -u root -p flush-privileges