How to enable "Force Encryption" for SQL Server 2005?

I need to enable "Force Encryption" for SQL Server 2005 by API instead of by hand, but I don't know which API can do it. I need to operate remote SQL server , so I cannot operate registry directly to do it. Who can help me?

You might find what you're looking for here:

http://www.microsoft.com/technet/archive/winntas/maintain/security/c2secgde.mspx?mfr=true

Buck Woody