To start with, W2k3 requires v9.0.4454 or later.
you (or your predecessor) may have been getting user data backups, but would not have been able to do a Disaster Recovery of the server.
Since Veritas no longer sells v9.x, you need to either purchase v10 from them or a reseller, or look on EBay or some of the surplus sites for v9.0/v9.1 serials