I am using the TDP for Exchange GUI, and restoring to a similar leveled
version of Exchange on the same base OS.
I get the following manual from the client:

04/25/2005 17:57:03 ACN5798E MS Exchange API HRESERESTOREADDDATABASE()
failed with HRESULT: 0xc7fe1f42 - Database not found. 04/25/2005
17:57:03 Total backups inspected:                   1

>From the error logs on the Exchange server, I get the impression that I
am not restoring to the correct Exchange database.

How can I restore one exchange server (or portions) to another server?

If my answer is RTFM, that is OK, please let me know which Fine Manual
to read and where! 

... TIA Jack