Hello,
1 : The Best practices for Backup Exec 12.5 Continuous Protection Server
http://support.veritas.com/docs/311708
2 : For enabling CPS we require one RAWS License only (Remote agent for Windows Server Licanse only)
3 : CPS is all to gether a different software which can be downloaded from http://fileconnect.symantec.com
4 : Backup destinations can only be created on servers that run Windows Server 2003/2008 operating systems and have a Continuous Protection Agent (CPA) installed. In addition, only one backup destination is allowed for each logical volume or drive letter.