I need to know what I need to purchase...

Here's what I have:
Server #1 - NetWare5, GroupWise6, OpenFile Agent, ArcServeIT 6.6
Server #2 - NetWare5
Server #3 - NetWare5
Server #4 - NT 4, BackupExec8 Single server
Server #5 - NT 4, BackupExec8 Multiserver, SQL Agent
Server #6 - NT 4
Server #7 - NT 4
Server #8 - NT 4

6 Remote servers all connected via Frame Relay - NetWare5, ArcServeIT 6.6

I want server #2 to perform the backup of the whole network using BackupExec.
What do I need to purchase? HELP!!

-Michelle