Exchange disaster recovery problem

OK, I hope someone here can help, I've been tearing my hair out for a week.

I have built an Exchange 2003 server on Windows 2003 server member server (not a DC).
Everything works fine, I am now setting up a disaster recovery plan.  My plan is to use ntbackup to backup the "microsoft information store, first storage group,"  to a network location on my file server.  To test this, I performed a test backup.
To restore the test backup, I did the following:
1) made sure the "database can be overwritten by a restore" checkbox on the mailbox store and public folder store were checked.
2) dismounted both the mailbox store and public folder store.
3) rechecked step one
4) opened ntbackup in advanced mode, navigated to the backup, cataloged it and clicked backup.
5) left the "restore to" pointing to the server (we only have one), and picked a temp folder on the server for the "temporary location for log and patch files"
6) started the backup - which obviously didn't work.

the report had the following:
Restore Status
Operation: Restore

Backup of "MNHC-MAIL\Microsoft Information Store\First Storage Group", Restored to"MNHC-MAIL\Microsoft Information Store\First Storage Group"
Backup set #1 on media #1
Backup description: "Set created 11/23/2005 at 3:31 PM"

Restore started on 11/23/2005 at 4:06 PM.
Unable to restore Exchange data to MNHC-MAIL\Microsoft Information Store\First Storage Group,
check the application event log for more information
Restore completed on 11/23/2005 at 4:06 PM.
Directories: 0
Files: 0
Bytes: 0
Time:  1 second

in the application event log there are 4 errors:
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Event Type:      Error
Event Source:      MSExchangeIS
Event Category:      Exchange Backup Restore
Event ID:      9635
Date:            11/23/2005
Time:            4:10:03 PM
User:            N/A
Computer:      MNHC-MAIL
Description:
Failed to find a database to restore to from the Microsoft Active Directory.
 Storage Group specified on the backup media is 71578e4b-3e4b-4646-ae1b-e2cd62a11141.
 Database specified on backup media is Mailbox Store (MNHC-MAIL), error is 0xc7fe1f42.

For more information, click http://www.microsoft.com/contentredirect.asp.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Event Type:      Error
Event Source:      ESE BACKUP
Event Category:      Callback
Event ID:      904
Date:            11/23/2005
Time:            4:10:03 PM
User:            N/A
Computer:      MNHC-MAIL
Description:
Information Store (2256) Callback function call ErrESECBRestoreGetDestination ended with error 0xC7FE1F42 Database not found.
.

For more information, click http://www.microsoft.com/contentredirect.asp.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Event Type:      Error
Event Source:      NTBackup
Event Category:      None
Event ID:      8003
Date:            11/23/2005
Time:            4:10:03 PM
User:            N/A
Computer:      MNHC-MAIL
Description:
End Restore to 'MNHC-MAIL\Microsoft Information Store\First Storage Group' 'Failed'

       Verify:  Off
 
Consult the backup report for more detail.


For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Event Type:      Error
Event Source:      NTBackup
Event Category:      None
Event ID:      8019
Date:            11/23/2005
Time:            4:10:04 PM
User:            N/A
Computer:      MNHC-MAIL
Description:
End Operation: Warnings or errors were encountered.
Consult the backup report for more details.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Does anyone have any idea what the heck is going wrong?  Even some idea of what the errors are would be of help.