To help you track the use of deprecated features,
SQL Server 2008 provides performance counters
and trace events. The SQLServer:Deprecated Features
object provides the Usage counter and an
instance for each deprecated feature. Regarding
trace events, the Deprecation Final Support event
is logged when you use a feature that will be
removed from the next version of SQL Server, and
the Deprecation Announcement event is logged
when you use a feature that will be removed from
a future version of SQL Server