Restoring Microsoft Exchange information store, from an image

Here is the scenario, please read carefully for an accurate understanding of this headache : )

Windows SBS 2003 - Microsoft Exchange 2003 - Disaster Recovery -

I am restoring the majority of a domain controller from Symantec Backup Exec and tape.  The problem is, the most current backup tape corrupted during the catalog process.  I am going to restore the majority of the server from an earlier tape, but the problem is, a week worth of Microsoft Exchange data will be missing on that earlier tape.  

Now here is the meat of the question:

I took an "image" of the server before the recovery process, because I had been having issues with the tape drive for months, and did not trust it to be the only way back.  Is there a way to restore the Microsoft Exchange Information Store, from an image?  The software I used is called, drive snapshot.

Thanks a million!!