Setting up a test system

I am setting up a test network using Hyper-V vms that replicates my neywork. I am running BackupExec 12.5. I am going to run a test restore to an Windows Exchange vm, and I have a few questions:

Does the target Exchange vm have to have the same machine name as the real one in order to do a full restore?

Is it possible to do a resore of a backup done on a Windows Exchange 2003 to a Windows Exchange 2007 or 2012? I am looking at this a a possible strategy to do a migration from a Exchange 2003 to a Exchange 2012.

Any help will be appreciated

Stephen Keating