Many thanks to those that posted.  Sadly, my client opted to go in a different direction.  I no longer need to restore his database.

Thank you very much.  This has me moving in the right direction.  However, now I am getting a message that the .CBK is not an InterSystems IRIS Backup File.  

The backup was created in Cache', but I was told that IRIS is backward compatible.  Is restoring a Cache' backup not permitted or is there a different procedure for that?

Thank you.