In my previous question on this portal, I had asked about some insight about syncing data between SQL Server and key-value based data repositories.
In lieu of the same
have you looked at SQL Service Broker? here's a link with some info on it: http://blogs.msdn.com/b/sql_service_broker/archive/2008/07/09/real-time-data-integration-with-service-broker-and-other-sql-techniques.aspx