
If you chose to watch TV with MediaPortal, the first question is about the type of setup you want to create.
Singleseat Installation will install MediaPortal and the TV-Server on the computer. The computer has to contain a video capture card, and will be used for viewing your recordings.
Note that you can still install a MediaPortal client on another computer also; a single seat installation can also function as a server for another computer.
Dedicated TV-Server (master) will install the TV-Server, not MediaPortal. The computer has to contain a video capture card, but will not be used for viewing. You will use another computer for the MediaPortal client (or any other TV-Server client) to watch the television stream.
MediaPortal client will install MediaPortal with the TV Client only, without the TV-Server. To view TV content the TV client can connect to another PC which has MediaPortal with Singleseat or Dedicated TV-Server option installed on it.
If you chose Singleseat Installation or Dedicated TV-Server in the previous question, then you will have to install a database. Out of the box, MediaPortal supports both Microsoft SQL Server Express Edition and MySQL Community Server. If you haven't installed a database server yet, you can now choose which one to install. See SQL Server for the pros/cons to help you choose.
Next up is the question where to install the database server software, and what password to use for the sa (system administrator) account. The default password is MediaPortal.
The 'learn here why' link will open the related Wiki page: SQL Server 2008
The installer will automatically set Windows firewall exceptions for the database server in use.
Note: If you're using a 3rd party firewall you have to configure it manually. See: Firewall Settings