question about Veritas 10 backup Exec

Hi, we have Veritas Backup Exec 10 installed on a server, we need to backup remote servers which are:
2x SQL Servers
1x Exchange 2007 Server
2x Domain Controller/File Servers
As far as I know, we need 2 SQL agents, 2 remote agents, and 1 exchange agent? Does version 10 have an agent for exchange? If not what can I use to backup the exchange 2007 server?
Also which servers do I need to AOFO?
Thanks in advance!