Hi,
If you want the benefits of the cron automatic sending you would need the Enterprise version.
With th Starter version you can manually send your mails. So you can't schedule your mailiing. You can create a mailing and click on "Send now" to send your mailing. During the sending process you need to keep the Acymailing window opened until all mails are send.
You can configure your manual send process in Configuration->Queue process.
