November CTP of SQL Server 2008 does not install SQL Server Native Client SDK files by default

To develop data access applications with SQL Server Native Client, you have to manually run sqlncli.msi to install sqlncli.h and sqlncli.lib.  sqlncli.msi is on your installation media.

This installation bug in the November SQL Server CTP is schedule to be fixed in the next CTP. 

David Schwartz
SQL Server User Education