This client app looks for the server from chap2\data3.  The only 
difference is that calls CoCreateInstanceEx( ) to create the
object on the specified remote system instead of on the local system.
The specified server must exist and be registered on the remote system.

Readers wanting to experiment with how existing apps work under DCOM
can use the chap2\data3 sample. Use DCOMCNFG.EXE to change the registration
of this class to point to the remote machine rather than the local. The
app will work correctly unchanged, locating the remote machine via
administrative settings in the registry rather than hard-wired code.