1. Press the
Select button to open a new dialog (shown below) that will allow you to select
the source database. 
Select your database and press the Open button. Do not check the Open as read-only box if present. SiteFX will tell you if SiteFX recognizes the source database structure or not.
2. If your source database is recognized, the Start Conversion button will become active. Upon pressing this button you will be prompted for the name and location of the new database. Enter this information and press the Open button. The conversion will begin immediately. Once it is finished SiteFX will be linked to your new database.