You can delete the MySQL database through the control panel. Connect to your site via FTP and delete the files off. You can use an FTP client like FileZilla. FileZilla can be downloaded here: https://filezilla-project.org/ To learn how to connect to your site using FileZilla please read our knowledge base article here: http://support.Winhost.com/KB/a660/configuring-filezilla-to-access-your-web-site.aspx