Backup operations master?

I would be grateful if someone could advise on the basic steps for the configuration of a backup / replication server.

Were have a single level domain with one server running Windows Server 2003 with the following roles & server Apps:-

Exchange 2003
SQL 2000
ISA 2000
AD
DHCP
DNS
File server role

Is it possible to configure the new server to automatically adopt these roles & the necessary FSMO roles in the event of a hardware failure of the above?

Thanks