MS sql server compact intallation

I need to install a MS sqlserver compact database on a Windows Skorpio 4 (WEC7) device.
Which version should I use and can I download id?


Said that this is more a MS question than a Datalogic question, we would recommend to install SQL Server Compact 3.5 SP2 (please refer to the following link for further information:

(See also:
How do I connect to a desktop SQL Server database from Window CE?)